Machine Tools Pune University MCQs
Machine Tools Pune University MCQs
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Manufacturing Process”.
1. Which manufacturing process includes the powder metallurgy?
a) casting
b) forming and shaping
c) machining
d) joining
Answer: b
Explanation: Forming and shaping process includes powder metallurgy. Powder metallurgy is a process in which material or shapes are made from or by using metal powders.
2. Which of the following is not included in forming and shaping process?
a) rolling
b) forging
c) sheet forming
d) broaching
Answer: d
Explanation: Only rolling, forging and sheet forming are included in forming and shaping process. Broaching is included in fabrication process.
3. Expendable mold and permanent mold are the parts of ____ manufacturing process.
a) machining
b) casting
c) none of the mentioned
d) joining
Answer: b
Explanation: In casting, we prepare a mould in which we pour liquid metal. Then we solidify the metal and make the product of desired shape with the help of pattern.
4. Casting includes grinding process.
a) true
b) false
Answer: b
Explanation: This is false. Casting doesn’t includes grinding process. Machining process includes grinding process.
5. Brazing is a type of metal joining process.
a) true
b) false
Answer: a
Explanation: It is a metal joining process. It joints the metal by melting and flowing a filler metal into the joint. The adjoining metal has higher melting point compare to filler metal.
6. Which of the following is included in machining process?
a) extrusion
b) soldering
c) drilling
d) coating
Answer: c
Explanation: Drilling is included in machining process. For drilling, the drill is rotated with a downward pressure causing the tool to penetrate into the material.
7. Which of the following processes are included in finishing?
a) honing and welding
b) polishing and lapping
c) coating and milling
d) molding and plating
Answer: b
Explanation: Coating and plating are included in finishing .Welding is included in joining, molding is included in casting and milling is included in machining. Rest all are included in finishing process.
8. Machining process deals with drawing.
a) true
b) false
Answer: b
Explanation: This is false. Forming and shaping type process include the process like drawing.
9. Which of the following is not the type of finishing process?
a) diffusion bonding
b) burnishing
c) both diffusion bonding and burnishing
d) none of the mentioned
Answer: a
Explanation: Only burnishing is an example of finishing process. Diffusion type bonding is included in the of process of joining.
10. Which of the following is not the type of joining process?
a) adhesive bonding
b) brazing
c) soldering
d) none of the mentioned
Answer: d
Explanation: Adhesive bonding, brazing and soldering all are thetypes of joining process. In adhesive bonding, adhesive are used to manufacture an assembly. Brazing and soldering are also the type of manufacturing process.
11. Which of the following is the type of permanent joining process?
a) welding
b) soldering
c) both welding and soldering
d) none of the mentioned
Answer: c
Explanation: In welding and soldering, once the join has made, we have to break the joint to get different part. So, both welding and soldering are known as permanent joining process.
12. Which of the following is the type of temporary joining process?
a) brazing
b) mechanical joining
c) both brazing and mechanical joining
d) none of the mentioned
Answer: b
Explanation: Brazing is the one type of permanent joining process and mechanical joining is the one type of temporary joining process because we can remove the joint with the help of equipments like some type of bolts and so on. Breaking of joint is not necessary in this case.
Answer: a
Explanation: In machining process, some raw material is wasted in or in order to perform different operations like drilling, turning etc.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Casting”.
1. Which type of metal is used in casting process?
a) liquid
b) solid
c) gas
d) plastic
Answer: a
Explanation: In casting, generally we used metal in liquid form so that it can be easily poured and then we solidified it.
2. The casting can be defined as pouring of molten metal into a mould
and taking it out after it becomes vapor.
a) true
b) false
Answer: b
Explanation: This is false.In casting, first we take metal in liquid form, Then we pour it and after it we let it to solidify and then we take it out.
3. Which of the following is the component of foundry sand?
a) river sand
b) clay
c) moisture
d) all of the mentioned
Answer: d
Explanation: These all are the components of foundry sand. Permeability is the important property for sand casting and this property is totally related with the foundry sand.
4. Which of the following component withstand the high temperature in
casting process?
a) clay
b) moisture
c) silica
d) water
Answer: c
Explanation: Silica has a property to withstand high temperature. Silica sand is taken out by crushing sandstone. It is mostly used because of its great abundance.
5. Why the porous structure provided by the silica is necessary in casting process?
a) for the escape of gases
b) for the escape of vapors
c) for the escape of both gases and vapors
d) none of the mentioned
Answer: c
Explanation: Permeability is the important factor for sand casting. If we do not allow gases and vapor to escape from the mould it can damage the casting pattern and can also weaken the strength of the material. Silica allows the escape of gases and vapor and that’s why it is necessary to provide this porous structure.
6. The upper portion of the casting flask is known as cope.
a) true
b) false
Answer: a
Explanation: The upper portion of casting flask is known as cope where as lower portion of casting flask is known as drag.
7. Chills are used to increase the heating rate of metal..
a) true
b) false
Answer: b
Explanation: This is false. Chills are generally used to increase the cooling rate of the metal..
8. Which of the following provide cohesion among the sand particles?
a) clay and moisture
b) clay and silica
c) moisture and silica
d) none of the mentioned
Answer: a
Explanation: Silica withstand the high temperature while clay and moisture provide cohesion. So among three pairs, pair of clay and moisture is the right answer.
9. Which of the following component gives the necessary plasticity to sand?
a) silica
b) clay
c) moisture
d) all of the mentioned
Answer: b
Explanation: Clay is also used to give plasticity to sand. Clay gives plasticity to sand in order to shape the mould.
Answer: b
Explanation: The mould material used for molding is a foundry sand. In mould, inner sand is finer known as facing sand and outer sand is known as baking sand.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Forging”.
1. In forging process, metals are shaped by _____
a) impact
b) cohesion
c) tense
d) none of the mentioned
Answer: a
Explanation: Forging is a manufacturing process which shapes the metal with the help of localized compressive force. It shapes metal with impact force.
2. Which method is considered as one of the oldest methods of giving required shapes to the metals ?
a) casting
b) forging
c) forming
d) none of the mentioned
Answer: b
Explanation: Experts considered forging as the oldest method of giving required shapes. For a long time, this forging was used by the smith with hammer. After that, this method was cam into picture in industries.
3. Smithy forging can also be termed as open die forging.
a) true
b) false
Answer: a
Explanation: This is true. It gives greater strength and also chances of voids are reduced in this type of forging.
4. Which of the following is the example of impact pressure forging ?
a) striking a blow
b) shaping by press
c) all of the mentioned
d) none of the mentioned
Answer: a
Explanation: Striking a blow is an example of impact pressure and shaping by press is an example of squeeze pressure forging.
5. Cold forging is also known as simply forging.
a) true
b) false
Answer: b
Explanation: This is false. Hot forging is known as simply forging.
6. Which type of forging is done by deforming the metal at room temperature?
a) cold forging
b) simply forging
c) hot forging
d) all of the mentioned
Answer: a
Explanation: Cold forging is done by deforming the metal at room temperature. This is done by increasing the level of stress above the elastic limit.
7. Hot forging is also known as simply forging.
a) true
b) false
Answer: a
Explanation: Hot forging is also known as simply forging and metal is heated to the temperature in this process.
8. The upset type of forging makes increment in the diameter of the workpiece.
a) true
b) false
Answer: a
Explanation: This forging makes increment in the diameter of the workpiece by compressing its length. Engine parts, coupling, bolts etc. are produced with the help of upset forging.
9. Which type of forging is done by blacksmith?
a) hand forging
b) machine forging
c) both hand forging and machine forging
d) none of the mentioned
Answer: a
Explanation: Hand forging is done in the smithy shop. This hand forging is done with the help of hand tools or steam hammer.
10. For which purpose, hand forging is used?
a) maintenance work
b) production of small articles tools
c) repair work
d) all of the mentioned
Answer: d
Explanation: Hand forging has the limited application in above regions because accuracy of hand forging depends mainly upon the blacksmith.
11. In which forging process, parts are heated in open hearth?
a) machine forging
b) hand forging
c) both hand forging and machine forging
d) none of the mentioned
Answer: b
Explanation: In hand forging, parts are heated in open hearth because it is done in smithy job manually. Shaping is carried out with hand tools.
12. In which forging process, parts are heated in closed hearth?
a) machine forging
b) hand forging
c) hand forging and machine forging both
d) none of the mentioned
Answer: a
Explanation: Heavy forgings are produced by presses and light forgings by hammer. In this, the squeezing action is carried entirely on the centre of the part.So, closed hearth is more preferable.
13. Press forgings are churlish in surface.
a) true
b) false
Answer: b
Explanation: Press forgings are smooth in surface to provide a closed tolerance in case of machine forging.
Answer: c
Explanation: Roll forging is done with the help of both cylindrical and semi cylindrical rolls. These both rolls contains one or more shaped grooves.
Answer: b
Explanation: This is false. Brittle metal cannot be forged.
Sanfoundry Global Education & Learning Series – Machine Tools and Machining.
To practice all areas of Machine Tools and Machining, here is complete set of 1000+ Multiple Choice Questions and Answers .
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Fabrication Process”.
1. Which type of process is also known as fabrication process?
a) casting
b) forming
c) joining
d) none of the mentioned
Answer: c
Explanation: Joining process is also known as the fabrication process. In fabrication process, product is made from raw materials and not from ready made components.
2. Which type of manufacturing process can fabrication process be termed?
a) primary
b) secondary
c) tertiary
d) none of the mentioned
Answer: b
Explanation: Fabrication process is also known as secondary manufacturing process. Fabrication process doesn’t produce raw material. It produce products from raw materials. That’s why it is known as secondary process.
3. Which of the following process is not included in fabrication process?
a) welding
b) riveting
c) pressing
d) surface finish
Answer: d
Explanation: Welding, riveting and pressing are included in fabrication process, Where as surface finish is included in machining process.
4. Which of the following pair is the part of fabrication process?
a) welding and metal removal
b) brazing and sintering
c) cohesion and sintering
d) all of the mentioned
Answer: b
Explanation: Metal removal is the type of machining process and cohesion is included in casting process. Rest are included in fabrication process.
5. Which of the following fabrication process is mainly responsible for the fabrication of very high pressure boilers and nuclear reactors?
a) welding
b) sintering
c) brazing
d) pressing
Answer: a
Explanation: Invention of welding has made a revolution in the fabrication process. Complex fabrication processes are also possible because of welding.
6. Which of the following is not the type of conventional welding process?
a) gas welding
b) friction welding
c) resistance welding
d) air welding
Answer: b
Explanation: Only gas welding and resistance welding are the types of conventional welding. friction welding is the type of recent welding process.
7. Which of the following is the type of gas welding?
a) atomic hydrogen arc welding
b) shielded metal arc welding
c) inert gas arc welding
d) none of the mentioned
Answer: d
Explanation: None of them is type of gas welding. All are included in welding process of type air welding.
8. Spot welding and seam welding are the types of gas welding.
a) true
b) false
Answer: b
Explanation: This is false. Spot welding and seam welding are included in resistance welding according to the classification of welding.
9. Which of the following is the type of the recent welding process?
a) laser beam
b) friction
c) ultrasonic
d) all of the mentioned
Answer: d
Explanation: These all are the types of recent welding process base on the classification of welding process. These all are high accurate welding process with better production rate.
10. Friction welding is mostly used for rail and road work and joining heavily sections.
a) true
b) false
Answer: b
Explanation: This is false. Thermit welding is used for rail and road work and joining heavily sections.
11. Pressure must be applied in welding process.
a) true
b) false
Answer: b
Explanation: Its not necessary that pressure must be applied in welding process. Pressure may be applied or may not be applied in the process of welding.
Answer: a
Explanation: These are the types of gas welding base on the classification of welding. Sometimes, this oxy acetylene welding is also known as oxyfuel welding.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Metal Working and Cutting Tools”.
1. In which operation, motion of job is rotary and motion of cutting tool is forward translating?
a) turning
b) planning
c) milling
d) all of the mentioned
Answer: a
Explanation: Turning is done when motion of job is rotary and motion of cutting tool is forward translating. In turning operation, metal is removed from the outer diameter of the surface. It is very basic operation.
2. Which type of job motion is there in drilling operation?
a) rotary
b) translating
c) fixed
d) none of the mentioned
Answer: c
Explanation: Motion of job is fixed in drilling operation. The drilling machine is one of the most important machine tool in workshop after lathe.
3. In which type of operation, motion of cutting tool is translating?
a) drilling and milling
b) milling and turning
c) boring and drilling
d) turning and planning
Answer: c
Explanation: Motion of cutting tool is translating in case of boring and milling. Boring is generally performed to enlarge the holes which are previously made and milling is generally performed to remove the material from the metal.
4. In which type of operation, motion of cutting tool is rotary as well as translating?
a) planning
b) milling
c) drilling
d) turning
Answer: c
Explanation: In drilling, both type of motion of cutting tool is necessary. For drilling, the drill is rotated with a downward pressure causing the tool to penetrate into the material.
5. In drilling motion of job is rotary.
a) true
b) false
Answer: b
Explanation: This is false. In drilling, motion of job is fixed.
6. Motion of cutting tool is rotary in milling machine.
a) true
b) false
Answer: b
Explanation: This is false. Motion of cutting tool is intermittent translating in milling operation.
7. Which type of cutting tools have wide application on lathes?
a) single point
b) multi point
c) both single point and multi point
d) none of the mentioned
Answer: a
Explanation: Single point cutting tools have wide application on slotting machines. Shear tools, boring tools, planner tools etc. are the examples of single point cutting tools.
8. Which of the following is the example of multi point cutting tool?
a) milling cutter
b) broaching tool
c) both milling utter and broaching tool
d) none of the mentioned
Answer: c
Explanation: Milling cutter and broaching tools use multi point cutting tool to perform their operations. In milling, material is removed as the work is fed against a rotating multipoint cutter. Broaching also remove material but high accuracy. Although its cost is high, it is largely used.
9. In how many groups, cutting tools can be divided?
a) 2
b) 3
c) 4
d) none of the mentioned
Answer: a
Explanation: Cutting tools can be classified in two groups : single point cutting tools and multi point cutting tools.
10. Motion of job is forward rotary in broaching operation.
a) true
b) false
Answer: b
Explanation: This is false. Motion of job is forward translating in broaching operation.
11. Which of the following is an example of non cutting shaping process?
a) turning
b) forging
c) drilling
d) milling
Answer: b
Explanation: Only forging is an example of non cutting shaping process, while turning, drilling and milling are the examples of cutting shaping process.
12. Which of the following is the example of cutting shaping process?
a) knurling
b) forging
c) pressing
d) drawing
Answer: a
Explanation: Only knurling is an example of cutting shaping process. Where as forging, pressing and drawing are the examples of non cutting shaping process.
13. The process of metal cutting is affected by the relative motion between the piece of work and the hard type edge of a cutting tool against the work piece.
a) true
b) false
Answer: a
Explanation: The relative motion which is produced by the combination of rotary and translating movements either of work piece or of the cutting tool or of both affect the metal cutting process.
Answer: a
Explanation: Metal working process can be classified in two groups : as cutting shaping process and non cutting shaping process.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Machining Process”.
1. Why metal removal process is costly?
a) more energy is required
b) some of the material is wasted
c) both more energy is required and some of the material is wasted
d) none of the mentioned
Answer: c
Explanation: As we require more energy, cost will definitely increase and again some material is also removed in this process.
2. In which machining process, removed metal is negligible?
a) surface finishing
b) metal removal
c) both surface finishing and metal removal
d) none of the mentioned
Answer: a
Explanation: Metal which is removed, is more in case of metal removal process but in surface finishing metal removal is negligible.
3. Dimension accuracy is not affected in metal removal process?
a) true
b) false
Answer: b
Explanation: This is false. Accuracy of dimension is not affected in surface finishing process.
4. Which of the following process is not grouped under metal removal process?
a) boring
b) milling
c) tumbling
d) rolling
Answer: c
Explanation: Only boring and milling are grouped under metal removal process. Tumbling is the type of surface finishing process.
5. Which of the following is not groped under the surface finishing process?
a) sawing
b) tapping
c) buffing
d) polishing
Answer: a
Explanation: Only tapping, buffing and polishing are grouped under surface finishing process. Sawing is the type of metal removal process.
6. Metal removal process gives poor contour on the compound.
a) true
b) false
Answer: b
Explanation: This is false. Metal removal process gives poor contour on the compound.
7. In how many groups, metal removal process can be classified?
a) 2
b) 3
c) 4
d) 5
Answer: b
Explanation: Metal removal process can be classified as conventional machining, abrasive process and nontraditional machining.
8. In which type of metal removal process, grinding is included?
a) conventional machining
b) abrasive process
c) nontraditional machining
d) none of the mentioned
Answer: b
Explanation: As per the classification of metal removal process, it is included in abrasive process. When we remove metal with the help of single or multiple abrasive particle, the process is called abrasive process.
9. ______ metal removal process includes milling.
a) conventional machining
b) abrasive process
c) nontraditional machining
d) none of the mentioned
Answer: a
Explanation: As per the classification of metal removal process, it is included in conventional process. Conventional machines are machines which requires human efforts and that are not fully automated. Metal removal process need some human efforts.
10. In which type of metal removal process, thermal energy is included?
a) conventional machining
b) abrasive process
c) nontraditional machining
d) none of the mentioned
Answer: c
Explanation: It is included in nontraditional machining. Thermal energy is an energy which is generated from the heat like kinetic energy of molecule, chemical energy of particle and so on.
11. Which of the following is the type of nontraditional machining?
a) turning
b) drilling
c) milling
d) none of the mentioned
Answer: d
Explanation: Turning, drilling and milling are the types of nontraditional machining. Drilling means make a hole by using drilling machine and milling machine is a machine tool that removes metal as the work is fed against multipoint cutter. Turning is basic operation generally carried out on lathe machine.
12. In which metal removal process, material is removed by particles?
a) conventional machining
b) abrasive process
c) nontraditional machining
d) none of the mentioned
Answer: b
Explanation: It can be understood from the definition of abrasive process. Like in abrasive water jet operation, material is removed by erosion.
13. In which process, various energy forms other than sharp cutting tool is used to remove materials?
a) conventional machining
b) abrasive process
c) nontraditional machining
d) none of the mentioned
Answer: c
Explanation: It can be understood from the definition of nontraditional machining. Non-traditional machining is an operation which do not use shear as their primary sources of energy.
14. Metal removal process is also termed as primary production process.
a) true
b) false
Answer: b
Explanation: This is false. Metal removal process is also termed as secondary production process.
Answer: d
Explanation: Electrochemical process, chemical machining and mechanical energy process are all the types of nontraditional machining. Apart from these, photochemical, chemical milling, ultrasonic machining, laser beam machining etc. are also the type of nontraditional machines.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Classification of Machine Tools”.
1. Which of the following is included in basic machine tools?
a) lathe machine
b) production milling machine
c) production drilling machine
d) none of the mentioned
Answer: a
Explanation: According to the definition of basic type of machine tools, lathe is basic machine tool while production milling machine and production drilling machines are special purpose drilling machines.
2. Which type of machine tool is used for mass production of essentially small parts?
a) general purpose
b) special purpose
c) automatic screw cutting
d) none of the mentioned
Answer: c
Explanation: The automatic type of screw cutting is used for this purpose. The automatic screw cutting is used because of its high accuracy.
3. Which of the following does all the work of lathe machine?
a) turning centre of CNC type
b) machining centre of CNC type
c) turning centre of CNC type and machining centre of CNC type both
d) none of the mentioned
Answer: a
Explanation: This type of turning centre does most of jobs of lathe. Lathe is a basic machine used for producing cylindrical machine. It is considered as father of machine tool.
4. CNC machining centre does all the work_____
a) milling machine
b) drilling machine
c) both milling and drilling machine
d) none of the mentioned
Answer: c
Explanation: CNC machining centre perform almost all jobs of milling and drilling machines. Drilling machine is used to produce holes and milling machines remove metal as the work is fed against a rotating multipoint cutter.
5. Which of the following is the type of lathe machine?
a) capstan
b) turret
c) both capstan and turret
d) none of the mentioned
Answer: c
Explanation: These both are categorized under the types of lathe machine. Turret and capstan lathe are generally used for the production of duplicate parts
6. The development of machine tools started from the invention of cylinder.
a) true
b) false
Answer: a
Explanation: According to the history of machine tools, Egyptians were the first, who used that. They used the cylinder.
7. DNC stands for_____
a) digital numerical control
b) direct numerical control
c) double numerical control
d) none of the mentioned
Answer: b
Explanation: DNC is the abstract form of direct numerical control.
8. Machine tools are economical for producing large rots.
a) true
b) false
Answer: b
Explanation: This is false. Machine tools are only economical, when it is used for producing small number of pieces.
9. The capacity and the efficiency of the universal machine tools are high.
a) true
b) false
Answer: b
Explanation: This is false. It is comparatively low in case of universal machine tool.
10. Machine tools can be classified as _____
a) geometric shape of the work piece
b) number of the work piece
c) function of the machine
d) all of the mentioned
Answer: d
Explanation: These all are the aspects, which are responsible for the classification. In machine tools, lathe is the most important machine tool followed by drilling machine and shaper machine.
11. Revolver machine tool is an example of special purpose machine tool.
a) true
b) false
Answer: a
Explanation: This is false. Revolver machine tool is an example of production machine tool.
Answer: b
Explanation: This is false. The demand are less in case of NC machine tool.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe Working Principle”.
1. Which machine tool is known as the mother machine tool?
a) drill
b) milling
c) lathe
d) none of mentioned
Answer: c
Explanation: Lathe is known as the mother machine tool because it
can perform various type of operations. It is a versatile machine.
2. Lathe is primarily used for producing ____surfaces.
a) flat
b) curve
c) taper
d) none of the mentioned
Answer: d
Explanation: Lathe is primarily used for producing cylindrical surfaces. But today it can perform various operations and perform various surfaces like curvilinear surface, flat surface and so on.
3. Which type of surface is produced by turning operation in lathe machine?
a) flat
b) cylindrical
c) taper
d) none of the mentioned
Answer: b
Explanation: Cylindrical surface is produced by turning operation in lathe machine. This turning can be done on the external surface. Boring is a type of turning which is performed in the internal surface.
4. What is the necessary condition for turning?
a) material of work piece should be harder than the cutting tool
b) cutting tool should be harder than the material of work piece
c) hardness of the cutting tool and material of of piece should be same
d) none of the mentioned
Answer: b
Explanation: Cutting tool should be harder than the material of work piece, so that it can be able to cut the work piece into the desire shape.
5. Traversing of tool parallel to the axis of job is termed as_____
a) cross feed
b) longitudinal feed
c) both cross feed and traversing feed
d) none of the mentioned
Answer: b
Explanation: It is the definition of longitudinal feed. Similarly, traversing of tool perpendicular to the axis of job is known as cross feed.
6. The swing diameter over the bed is the largest diameter.
a) true
b) false
Answer: a
Explanation: This is true. Swing diameter over the lathe is the largest diameter of work over the bed that will revolve without touching height of the centres measured from the bed of the lathe.
7. Lathe cannot produce internal features like holes.
a) true
b) false
Answer: b
Explanation: This is false. Lathe is a versatile machine tool. It can produce holes, flat surfaces and so on.
8. Which type of feed is needed in facing operation?
a) longitudinal
b) cross
c) both cross and longitudinal
d) none of the mentioned
Answer: b
Explanation: Facing operation is done by the cross feed. In facing, workpiece is rotated against the single point cutting tool.
9. Which type of surface is produced in facing operation?
a) cylindrical
b) taper
c) flat
d) none of the mentioned
Answer: c
Explanation: Flat surface is produced in facing operation as per the definition. In facing operation, metal is removed by the tool from thee end of the metal and flat surface is produced.
10. Traversing of tool at any angle to the job axis produces curve surfaces.
a) true
b) false
Answer: b
Explanation: This is false. Traversing of tool at any angle to the job axis produces taper surfaces.
11. In taper operation, which type of surface is produced?
a) flat
b) curve
c) circular
d) none of the mentioned
Answer: d
Explanation: Taper type surface is produced in the process of taper turning. Taper is a shape in which the diameter of the both ends of bar are different.
12. Which type of feed is needed in turning operation?
a) longitudinal
b) cross
c) both cross and longitudinal
d) none of the mentioned
Answer: a
Explanation: As per definition, longitudinal feed is needed in turning operation. Longitudinal feed is always parallel to the axis of rotation of the spindle.
Answer: d
Explanation: Lathe is a versatile machine. It can perform various types of jobs. It is primarily intended for producing only cylindrical surface but it can produce various types of surfaces.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Types of Lathe”.
1. Which type of lathe is also known as centre lathe?
a) engine lathe
b) bench lathe
c) room lathe
d) capstan lathe
Answer: a
Explanation: Engine lathe is also known as the centre lathe. This centre lathe is generally used for the production of cylindrical surfaces.
2. Wheel lathe is the type of ____
a) engine lathe
b) centre lathe
c) speed lathe
d) special purpose lathe
Answer: d
Explanation: Wheel lathe is the type of special purpose lathe. This lathe is generally used for the purpose of turning wheels of railways locomotives and so on.
3. Wood working lathe is the type of ____
a) engine lathe
b) centre lathe
c) speed lathe
d) special purpose lathe
Answer: c
Explanation: Wood lathe is the type of speed lathe. Speed lathe can revolve spindle with great speed. It is also used for turning small objects.
4. Geared lathe is the type of____
a) engine lathe
b) centre lathe
c) speed lathe
d) special purpose lathe
Answer: a
Explanation: Geared lathe is the type of engine lathe. Engine lathe is a screw cutting type lathe. It has back-geared cone-driven headstock.
5. Belt driven lathe is the type of____
a) engine lathe
b) centre lathe
c) speed lathe
d) special purpose lathe
Answer: b
Explanation: Belt driven lathe is the type of centre lathe. In practical, various types of belt driven machines are used like V belt driven machine and so on.
6. Duplicating lathe is the type of____
a) engine lathe
b) centre lathe
c) speed lathe
d) special purpose lathe
Answer: d
Explanation: As per the classification of lathe, duplicating lathe the type of special purpose lathe. It is rarely used.
7. Spinning lathe is the type of____
a) engine lathe
b) centre lathe
c) speed lathe
d) special purpose lathe
Answer: c
Explanation: Spinning lathe is the type of speed lathe. Spinning lathe is a lathe generally used the purpose of shaping metal holloware with the help of flat stock over a form with the help of hand tool.
8. Which of the following is the type of engine lathe?
a) centering lathe
b) individual motor driven lathe
c) duplicating lathe
d) all of the mentioned
Answer: b
Explanation: Centering lathe is the example of speed lathe and duplicating lathe is the type of special purpose lathe while individual motor driven lathe is an example of engine lathe.
9. Which of the following is special purpose lathe?
a) polishing lathe
b) centering lathe
c) spinning lathe
d) none of the mentioned
Answer: d
Explanation: Polishing lathe, centering lathe and spinning lathe are the examples of speed lathe.
10. Which of the following is the example of speed lathe?
a) wheel lathe
b) polishing lathe
c) gap bed lathe
d) all of the mentioned
Answer: b
Explanation: Wheel lathe and gap bed lathe are the examples of the special purpose lathe while polishing lathe is an example of speed lathe.
11. T – lathe is the example of bench lathe.
a) true
b) false
Answer: b
Explanation: This is false. T – lathe is the example of special purpose lathe.
12. Which of the following is the type of lathe?
a) bench lathe
b) tool room lathe
c) capstan and turret lathe
d) all of the mentioned
Answer: d
Explanation: These all are the types of lathe as per the lathe classification. Lathe is primarily intended for the purpose of producing cylindrical surfaces although today it becomes a versatile tool.
13. Lathe can be classified on the basis of_____
a) designs and construction
b) fundamental principle
c) function performance
d) all of the mentioned
Answer: a
Explanation: All types of lathe machine employ the same fundamental principle of operation and perform the same function. They are differ only in the terms of their designs and constructions.
Answer: b
Explanation: This is false. Wood working lathe is the example of speed lathe.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Bed”.
1. Which of the following is the base of the lathe machine?
a) bed
b) tailstock
c) headstock
d) none of the mentioned
Answer: a
Explanation: Bed is the base of the lathe machine. This provides the necessary working height for the lathe.
2. Which of the following is fitted on the bed?
a) headstock
b) tailstock
c) headstock and tailstock both
d) none of the mentioned
Answer: c
Explanation: These both are fitted on the bed as per the definition. This is the structure on which the entire lathe parts are situated.
3. The bed generally rest on copper structure.
a) true
b) false
Answer: b
Explanation: This is false. Actually, the bed generally rest on cast iron or welded structure.
4. Which of the following is not the part of the bed?
a) vee slide
b) tailstock
c) carriage
d) none of the mentioned
Answer: d
Explanation: All are the part of the bed. Tailstock is a sliding unit on the bed-ways of the lathe bed. Carriage is the part of the lathe which slides over the bed-ways.
5. Which of the following provides foundation for the whole machine?
a) tailstock
b) bed
c) headstock
d) carriage
Answer: b
Explanation: As per the definition of the bed. It is the base of lathe which provides needed height as well as foundation for whole machine.
6. Small lathes have a sliding bed.
a) true
b) false
Answer: b
Explanation: This is false. Generally, small lathes don’t need a sliding bed. Very large lathes have a sliding bed.
7. There are some beds, which hold a gap closer to the headstock.
a) true
b) false
Answer: a
Explanation: It can be easily seen from the definition of the bed. The headstock is a fixed unit of the lathe on the left hand side of the lathe bed.
8. Which type of bed design offers more rigidity and thermal stability?
a) true slant bed
b) flatbed
c) conventional bed
d) none of the mentioned
Answer: a
Explanation: True slant bed provides more rigidity and thermal stability as compare to others. It is very necessary for chips to fall to the chip plan. Slant bed do this job better than flat bed and conventional bed.
9. In which slant angles, the slant bed design is offered?
a) 30 and 60
b) 60 & 45
c) 30, 60 and 45
d) 30 and 45
Answer: c
Explanation: Mainly this bed design is offered in 30 and 45 slant angles, but sometimes slant bed of 60 degree type is also offered.
10. In which type of bed, length of guide rail is bounded to the
deepness of the casting?
a) true slant bed
b) flat bed
c) conventional bed
d) none of the mentioned
Answer: b
Explanation: It can be easily seen from the definition of the flat bed. The guide way is the surface of the bed in contact with the sliding units of lathe.
11. There are some beds, which hold a gap closer to the headstock.
a) true
b) false
Answer: a
Explanation: The gap is there so that it can permit bigger diameters to be tuned.
12. Which of the following is the part of bed?
a) vee slide
b) machine ways
c) headstock
d) all of the mentioned
Answer: d
Explanation: All are the parts of the bed. This bed and its parts generally assigned iron casting.
Answer: a
Explanation: This is the advantage of true slant bed. It take up less space, everything is rotated about the centerline which is slightly away from the operator which is capable of putting the spindle closer to get parts in and out.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Cone Pulley drive”.
1. Which of the following are the advantages of cone pulley drive?
a) easy to maintain
b) can take up heavy load
c) positive drive when the back gear is in engagement.
d) all of the mentioned
Answer: d
Explanation: These all are the advantages of the cone pulley drive. It is stepped pulley mounted on the main spindle which is free to revolve.
2. Number of spindle speeds is limited to the number of steps
in the cone pulley drive.
a) true
b) false
Answer: a
Explanation: It can be easily seen from the definition of cone pulley drive. This cone pulley gets the drive from the main motor.
3. What does happen during the overload in the cone?
a) number of steps in cone pulley increases
b) belt slips off
c) nothing happens
d) none of the mentioned
Answer: b
Explanation: During the overload in the cone, the belt slips off so that no major damage happens to the lathe.
4. It doesn’t take time to change spindle speeds.
a) true
b) false
Answer: b
Explanation: This is false. In practical work, it takes time to change the spindle speed.
5. Cone pulley drive without back gear arrangement means_____
a) back gear in
b) back gear out
c) back gear neutral
d) none of the mentioned
Answer: b
Explanation: It can be easily seen from the definition of the back gear. The headstock having cone pulley drive is known as cone pulley headstock.
6. Cone pulley drive with back gear arrangement means_____
a) back gear in
b) back gear out
c) back gear neutral
d) none of the mentioned
Answer: a
Explanation: It can be easily seen from the definition of the back gear. The axis of this back gear shaft is parallel to the axis of the main spindle.
7. Which of the following mounted on the bush bearing?
a) speed motor
b) spindle
c) both spindle and speed motor
d) none of the mentioned
Answer: b
Explanation: As per the construction of lathe, spindle is fitted on the bush bearing. It is mounted in the headstock casting and a gear wheel called bull gear is keyed to it.
8. Stepped pulley mounted on the main spindle is fixed.
a) true
b) false
Answer: b
Explanation: This is false. Stepped pulley is free to revolve.
9. The back gear unit has a shaft, which carries _____
a) a gear
b) a pinion
c) a gear and a pinion both
d) none of the mentioned
Answer: c
Explanation: The back gear unit has a shaft, which carries a gear and a pinion. The number of teeth of the gear and a pinion on the back gear shaft corresponds to the number of teeth on the bull gear and the pinion on the cone pulley.
10. The axis of the back gear is_____ to the axis of the main spindle.
a) parallel
b) perpendicular
c) at any angle other than 0 and 90
d) none of the mentioned
Answer: a
Explanation: The axis of the back gear is parallel to the axis of the main spindle and the back gear is bought in engagement or disengagement with the cone pulley system by means of a lever.
Answer: a
Explanation: This is true. A three-stepped cone pulley headstock provides three direct ranges of speeds through the belt connection and with the back gear in engagement, three further ranges of reused speeds can be obtained.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “All Gear Drive”.
1. It is a box section having a top cover. For which of the
following part of lathe, above sentence is true?
a) cone pulley drive
b) all gear drive
c) carriage
d) none of the mentioned
Answer: b
Explanation: The mentioned sentence is true for all gear drive as per the definition of it. The headstock having all gear drive is known as all-geared headstock.
2. The top cover of all gear drive is_____
a) removable
b) non-removable
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: The top cover of all gear drive is removable if needed. All gear drive is like a box section of lathe.
3. All gear drive is equipped with_____
a) clutches
b) a brake
c) clutches and a brake both
d) none of the mentioned
Answer: c
Explanation: All gear drive is equipped with these both clutches and a bark. Clutch is a device which is used to connect and disconnect an engine and power transmission.
4. All gear drive has external webs.
a) true
b) false
Answer: b
Explanation: This is false. All gear drive has internal webs for shaft bearing and some other purposes.
5. Output shaft is connected by means of V belts to the main motor.
a) true
b) false
Answer: b
Explanation: This is false. Actually, input shaft is connected by means of V belts to the main motor.
6. Sliding gears may be mounted on_____ intermediate shafts.
a) only one
b) only two
c) two or more than two
d) none of the mentioned
Answer: c
Explanation: There may be two or more intermediate shafts on which sliding gears are mounted. It has an input shaft which is connected by means of V belts to the main motor.
7.The main spindle is the first driven shaft in the headstock assembly.
a) true
b) false
Answer: b
Explanation: This is false. The main spindle is the last driven shaft in the headstock assembly.
8. Which of the following operates the forks of the sliding gears?
a) lever
b) spindle
c) clutch
d) none of the mentioned
Answer: a
Explanation: The lever operates the forks of the sliding gears. This levers are situated outside in the front of the headstock assembly.
9. The nose of the spindle is outside the headstock casting.
a) true
b) false
Answer: a
Explanation: This is true. These nose is designed to accommodate the work holding devices.
10. What is the purpose of having webs in all gear drive?
a) for stiffening
b) for taking shaft bearings
c) for stiffening and taking shaft bearing both
d) none of the mentioned
Answer: c
Explanation: The webs are used for these both purposes:for taking shaft bearings and for stiffening. This gear drive also has shaft equipped with clutches and a brake.
Answer: c
Explanation: All the mentioned sentences are true except the one which says that the nose of the spindle is inside the headstock casting. Actually, the nose of the spindle is outside the headstock casting.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Tailstock”.
1. Which of the following is not true regarding tailstock?
a) tailstock is also known as loose headstock
b) it is a fixed unit on the bed ways
c) it provides support to the other end of the work when it is being machined
d) none of the mentioned
Answer: b
Explanation: The all above mentioned statements are correct except one which says that it is a fixed unit on the bed ways. Actually, it is a sliding unit on the bed ways
2. For performing which kind of operations, it holds a tool?
a) drilling
b) reaming
c) tapping
d) all of the mentioned
Answer: d
Explanation: Tail stock holds a tool for performing operations such as drilling, reaming, tapping etc. To accommodate different lengths of work, the body of the tailstock can be adjusted along the ways chiefly by sliding it to the desired position.
3. The body of the tailstock can be adjusted by clamping with the help of_____
a) bolts
b) plates
c) bolts and plates both
d) none of the mentioned
Answer: c
Explanation: The body of the tailstock can be adjusted by clamping with the help of bolts and plates to adjust with job’s dimensions. The body of tailstock is situated on the right hand side of the lathe bed.
4. The upper casting of the body can be moved_____ from the operator.
a) toward
b) away
c) toward or away both
d) none of the mentioned
Answer: c
Explanation: The upper casting of the body can be moved toward or away from the operator. This movement is done with the help of setover screw to offset the tailstock for taper turning and to realign the tailstock centers for straight turning.
5. Which of the following is not the part of spindle?
a) dead center
b) hand wheel
c) setover screw
d) none of the mentioned
Answer: d
Explanation: All above mentioned are the parts of spindle. In tailstock, the spindle holds dead center. In headstock, the spindle is able to hold live center.
6. Offset of tailstock is done for_____
a) taper turning
b) straight turning
c) both turning of taper type and straight type
d) none of the mentioned
Answer: a
Explanation: Offset is done for the purpose of taper turning. Taper is a shape in which the diameter of the both ends are different.
7. Realign of tailstock center is done for_____
a) taper turning
b) straight turning
c) taper turning and straight turning
d) none of the mentioned
Answer: b
Explanation: Realign is done for the purpose of straight turning. The body is bored to act as the barrel which carries the tailstock spindle that moves in and out of the barrel by means of a screw when the tailstock hand wheel is turned.
8. Which type of rotation of the hand wheel causes the spindle
to be drawn inward?
a) clockwise
b) anticlockwise
c) either anticlockwise or clockwise
d) none of the mentioned
Answer: b
Explanation: Anticlockwise rotation of the hand wheel causes the spindle to be drawn inward. This spindle has a keyway in the underside which mates with a small key fitted on the barrel to prevent rotation.
9. The front of the spindle has a taper hole.
a) true
b) false
Answer: a
Explanation: The front of the spindle has a taper hole into which the dead centre or other tools fit.
Answer: b
Explanation: This is false. Clockwise rotation of the hand wheel causes the spindle to advance. Due to this clockwise and anticlockwise movement, the end of the screw strikes the back of the dead center or any tool that is fitted into the hole.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Headstock”.
1. Headstock is a flexible unit.
a) true
b) false
Answer: b
Explanation: This is false. Headstock is a fixed unit. It provides mechanical means of rotating the work at multiple speeds.
2. Which of the following is supported by the headstock?
a) spindle
b) spindle bearing
c) speed change mechanism
d) all of the mentioned
Answer: d
Explanation: These all are supported by the headstock.
3. The spindle is solid.
a) true
b) false
Answer: b
Explanation: This is false. It is not solid. The spindle is hollow in headstock and it is supported by the headstock.
4. Spindle holds dead centers.
a) true
b) false
Answer: b
Explanation: This is false. Spindle holds live centers.
5. Which of the following method is used to vary the speed of a lathe spindle?
a) gear out
b) gear in
c) both gear out and gear in
d) none of the mentioned
Answer: c
Explanation: These both methods are used to vary the speed of the lathe. Apart from these two, variable speed motor is also used to vary the speed of a lathe spindle.
6. Which type of end does tapered bar has?
a) pointed
b) projected
c) pointed or projected
d) none of the mentioned
Answer: c
Explanation: Taper bar may has pointed or projected end depending upon the task. Tapered bar is a bar which has different diameters at both ends.
7. Headstock usually stands on the left side of the lathe.
a) true
b) false
Answer: a
Explanation: Headstock usually stands on the left side of the lathe, while tailstock stands right side of the lathe.
8. Which of the following lathe part serves as a housing for the
back gear, driving pulley etc?
a) tailstock
b) headstock
c) bed
d) none of the mentioned
Answer: b
Explanation: Headstock performs this job. This headstock should be robust as so many cutting forces are involved in it.
9. Spindle is fitted with_____
a) chucks
b) faceplates
c) chucks or faceplates
d) none of the mentioned
Answer: c
Explanation: Spindle is fitted with chucks and faceplates. A face plate consists of a circular disc bored out and a chuck is device of lathe attached to the spindle by means of bolts with back late screwed on to the spindle nose.
10. The spindle was directly driven by_____ in later machine.
a) flat belt pulley
b) gear box
c) flat belt pulley and gear box both
d) none of the mentioned
Answer: b
Explanation: Spindle was driven by gear box in later machine. It is a disc or plate type structure connected to the shaft.
Answer: a
Explanation: The spindle was directly driven by flat belt pulley in older machine. Flat pulley generally made up of cast iron, steel, wood, plastic and paper and used with a belt drive is known as flat belt drive.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Carriage-1”.
1. In how many parts, compound rest can be classified?
a) 2
b) 3
c) 4
d) 5
Answer: a
Explanation: Compound rest can be classified in two parts : swivel base and top slide.
2. The swivel base is assembled to the_____ of cross slide.
a) top
b) middle
c) bottom
d) none of the mentioned
Answer: a
Explanation: The swivel bas is always assembled to the top of the cross slide as per the construction of the lathe. The compound rest may be clamped at any desired position by tightening the T-bolts.
3. How many types of movements are possible in carriage?
a) 2
b) 3
c) 4
d) none of the mentioned
Answer: b
Explanation: Three types of feed are possible in carriage. Longitudinal feed, cross feed and angular feed are possible in case of the carriage.
4. Which type of operation is possible for the top slide?
a) manual
b) by power feed
c) manual and by power feed both
d) none of the mentioned
Answer: a
Explanation: Only manual operation is possible for the cross feed. The top slide assists in feeding the tool to the work.
5. Which type of feed is always done perpendicular to the axis of work?
a) longitudinal feed
b) angular feed
c) cross feed
d) none of the mentioned
Answer: c
Explanation: Cross feed is always done perpendicular to the axis of the work as per the classification of carriage movements. Cross feed is done with the help of the cross-slide movement.
6. Which of the following is not true for compound rest?
a) the swivel base is provided with a dovetail on its bottom surface
b) the top slide has dovetail groove
c) the assembly of the top slide to the swivel base is done by a tapered jib
d) none of the mentioned
Answer: a
Explanation: All the sentences are true except the one which says that the swivel base is provided with a dovetail on its bottom surface. The swivel base is provided with a dovetail on its top surface.
7. Taper jib can be adjusted to control the swivel base movements.
a) true
b) false
Answer: b
Explanation: This is false. Taper jib can be adjusted to control top slide movements.
8. Which of the following is not true?
a) sliding over the bed is done by the operation of the hand wheel in saddle
b) the top of the cross slide has got a dovetail groove machined
c) the sliding of the top slide on the swivel bas is accomplished
by the help of a screw-rod
d) none of the mentioned
Answer: b
Explanation: All the sentences are true except the one which says that the top of the cross slide has got a dovetail groove machined. The bottom of the cross slide has got a dovetail groove machined.
9. In compound rest, the screw-rod is fitted with_____
a) a hand wheel
b) a graduated collar
c) a hand wheel and a graduated collar both
d) none of the mentioned
Answer: c
Explanation: These both are used for the fitting of the screw-rod. The sliding of the top slide on the swivel base is accomplished by the help of this screw-rod.
Answer: c
Explanation: Function of cross slide can be done either by hand or by manual. This cross-slide functions perpendicular to the lathe axis.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Carriage-2”.
1. Carriage provides various movements for the cutting tool______
a) manually
b) by power feed
c) manually and by power feed both
d) none of the mentioned
Answer: c
Explanation: These two types of movements are possible in carriage. Carriage provides various movements for the cutting tool.
2. Carriage is the part of lathe which slides over the bed ways.
a) true
b) false
Answer: a
Explanation: This is the function of carriage. It can be locked on the bed at any desired position by tightening the carriage lock-screw.
3. The compound rest may be clamped at_____
a) 0 degree
b) 90 degree
c) 180 degree
d) any degree between 0 and 360
Answer: d
Explanation: Compound rest may be clamped at any required position between 0 and 360 degree. It can be tightened by T-bolts at that position.
4. Which type of feed is always done parallel to the axis of work?
a) longitudinal feed
b) cross feed
c) angular feed
d) none of the mentioned
Answer: a
Explanation: Longitudinal feed is always done parallel to the axis of the work as per the classification of carriage movements.
5. Which of the following assists in feeding the tool to the work?
a) swivel base
b) top slide
c) swivel base and top slide both
d) none of the mentioned
Answer: b
Explanation: Only top slide assists in feeding the tool to the work. We can give manual operation in the top slide.
6. Which type of feed is done with the help of compound slide movement?
a) longitudinal feed
b) angular feed
c) cross feed
d) none of the mentioned
Answer: b
Explanation: Angular feed is done with the help of the compound slide movement positioned at an angle to the axis of the work.
7. In how many parts, carriage can be divided?
a) 2
b) 3
c) 4
d) 5
Answer: d
Explanation: Carriage can be divided in saddle, cross-slide, compound rest swivel and top slide, tool post and apron.
8. Saddle is_____ shaped casting and has_____ guide grooves and flat grooves.
a) H and V
b) V and H
c) H and H
d) V and V
Answer: a
Explanation: Saddle is H shaped casting and has v guide grooves and flat grooves. Saddle is mounted on the spindle.
9. In saddle, grooves are machined at the ______ corresponding to the lathe bed ways.
a) top face
b) middle face
c) bottom face
d) none of the mentioned
Answer: c
Explanation: In saddle, grooves are machined at the bottom corresponding to the lathe bed ways. The surface of the bed in contact with the sliding units of the lathe are known as guideways or slideways or bedways.
Answer: b
Explanation: The cross slide functions perpendicular to the lathe axis. The bottom of the cross-slide has got a dovetail groove machined, which corresponds to the external dovetail machined on the saddle.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Toolpost”.
1. The tool post is assembled to the swivel base.
a) true
b) false
Answer: b
Explanation: The tool post is assembled to the top slide. The tool post holds the tool or tools meant for operations to be performed on the work.
2. Which of the following is the part of single way tool post?
a) ring base
b) rocket arm
c) a tool clamping screw
d) all of the mentioned
Answer: d
Explanation: Single way tool post consists of these all parts. This tool post is consist of a circular tool post body with a slot for accommodating the tool or tool holder.
3. The tool is positioned on rocket arm and clamped in case of single way tool post.
a) true
b) false
Answer: a
Explanation: This is true. The ring base, a rocket arm and a tool clamping screw complete the assembly of this type of tool post.
4. In single way tool post, the center height of the tool tip can be adjusted with the help of_____
a) rocket arm
b) ring base
c) rocket arm and ring base both
d) none of the mentioned
Answer: c
Explanation: Both rocket arm and ring base are used for this purpose. The rigidity of the tool is less as it is clamped with only one bolt.
5. Four bolt tool post is held in position by____ straps and _____ bolts.
a) 2 and 4
b) 4 and 2
c) 2 and 2
d) 4 and 4
Answer: a
Explanation: It is held by 2 straps and 4 bolts. This type of tool post provides a very firm support for either a single or double tool set-up. This is, therefore, often fitted to heavy duty lathes.
6. Loosing coil springs are fitted on each strap in four bolt tool post.
a) true
b) false
Answer: b
Explanation: This is false. Loosing coil springs are fitted on each bolt to keep the straps in place. Adjustment of the tool height can be made by using parallel packing strips under the tools.
7. Open slide tool post is clamped in position by_____ set screws.
a) 1
b) 2
c) 3
d) 4
Answer: b
Explanation: Open slide tool post is clamped in position by 2 set screws. This tool is held quite independent of the main fixing bolt.
8. In which tool post, quick replacement of the tool is ensured?
a) single way tool post
b) four bolt tool post
c) open slide tool post
d) none of the mentioned
Answer: c
Explanation: In open slide tool post, the tool post slide can be swiveled to any desired position after loosening the central bolt which slides in a T-slot.
9. Four way tool post is also known as_____
a) square tool post
b) indexing type tool post
c) square tool post and indexing type tool post both
d) none of the mentioned
Answer: c
Explanation: These both terms square tool post and indexing type tool post are used as the synonyms of the four way tool post. Four tools can be fixed in this types of tool post and any one can be bought to the operating position and the square head is clamped with the help of the locking lever.
10. The indexing is automatic in four way tool post.
a) true
b) false
Answer: b
Explanation: The indexing may be manual or automatic in four way tool post.
11. Four bolt tool post provides a very firm support for_____
a) single tool set up
b) double tool set up
c) either single or double tool set up
d) none of the mentioned
Answer: c
Explanation: Four tool post provides firm supports for both single or double tool set up. In this tool post, each tool is secured in the tool post by more than one bolt and so the rigidity is more.
12. Which of the following is not true for four bolt tool post?
a) adjustment for the tool height can be made by using parallel
strips under the tools
b) this type of tool post does swivel in itself
c) setting of the tool in any desired angle is affected by the
adjustment of the compound slide
d) none of the mentioned
Answer: b
Explanation: All the mentioned sentences are true except the one which says that this type of tool post does swivel in itself. Actually, This type of tool post does swivel itself.
13. Which of the following is not true for open slide tool post?
a) the tool is held quite independent of the main fixing bolt
b) the height of the cutting point can be adjusted by using
parallel packing strips
c) the tool post slide can be swiveled to only parallel or
perpendicular position
d) none of the mentioned
Answer: c
Explanation: The tool post slide can be swiveled to any desired position after loosening the central bolt which slides in a T-slot.
14. Which of the following is not true for four way tool post?
a) each tool is secured in the tool post by one bolt
b) square head is clamped with the help of the locking lever
c) it takes more time to set the center height
d) none of the mentioned
Answer: a
Explanation: All sentences are true except the one which says that each tool is secured in the tool post by one bolt. Actually, each tool is secured in the tool post by more than one bolt in order to obtain more rigidity.
Answer: a
Explanation: Frequent changing of the tool for different operation need not be done in four way tool post as four tools can be clamped.The disadvantage is that skill is required to set the tools and it takes more time to set the center height.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Apron”.
1. Which of the following contains friction clutches?
a) saddle
b) cross slide
c) swivel base
d) apron
Answer: d
Explanation: Apron includes friction clutches. Friction clutches are there in apron for the purpose of automatic feeding.
2. The layout of the_____ includes an interlocking device.
a) saddle
b) cross slide
c) apron
d) swivel base
Answer: c
Explanation: The layout of the apron includes an interlocking tool which prevents or stops the simultaneous engagement of feed shaft and the lead screw.
3. The apron hand wheel can be turned to move carriage back and forth longitudinally with the help of hand. The complementary motion to this is obtained by______ handle.
a) longitudinal feed
b) cross feed
c) angular feed
d) none of the mentioned
Answer: b
Explanation: The complementary motion to this is obtained by the cross feed handle which moves the cross slide and forth across the saddle.
4. In apron, which type of feed is used to operate the carriage?
a) hand feed
b) power feed
c) hand feed and power feed both
d) none of the mentioned
Answer: c
Explanation: Both type of feed is used to operate the carriage. Although hand feed takes more time and gives less accuracy while power feed takes less time and gives more accuracy.
5. In which position, the section lever can be kept?
a) up and down
b) up, down and neutral
c) only neutral
d) none of the mentioned
Answer: b
Explanation: The section lever can be kept in all above mentioned positions to handle the feed. This apron is a part of lathe hangs over the front of the feed.
6. With the help of how many half nuts, apron provide power feed to the carriage at the time of thread cutting?
a) 1
b) 2
c) 3
d) 4
Answer: b
Explanation: Generally 2 half nuts are used for this purpose. In addition, there is a split nut which engages when required with the lead screw, when cutting either internal or external thread.
7. In Apron, power is transmitted from spindle to_____
a) lead screw
b) feed rod
c) lead screw and feed rod both
d) none of the mentioned
Answer: c
Explanation: Power is transmitted to both lead screw and feed rod from spindle. The layout of this apron includes an interlocking device which prevents the simultaneous engagement of the feed shaft and the lead screw.
8. Which of the following mechanism is used for the purpose of power transmission from the spindle?
a) spindle gear arrangement
b) tumbler gear arrangement
c) spindle gear arrangement and tumbler gear arrangement both
d) none of the mentioned
Answer: c
Explanation: These both gear arrangements are used for the purpose of power transmission. In addition to this, there is hand wheel in apron which can be turned to move carriage back and forth longitudinally by hand for manual power.
9. A worm is fixed on the lead screw.
a) true
b) false
Answer: b
Explanation: This is false. A warm is fixed on the feed rod with the help of the sliding key.
Answer: a
Explanation: Apron is fastened to the spindle and hangs over the front of the bed. It is the part of carriage.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Feed Mechanism”.
1. Which type of feeding does feed mechanism enables?
a) automatic
b) manual
c) automatic and manual both
d) none of the mentioned
Answer: a
Explanation: Feed mechanism enables automatic feed. It enables feeding for the tool longitudinal and traversely whenever needed.
2. Which of the following indicates the benefit of automatic feeding?
a) the finish on the work will be better
b) the feeding of the tool will be at a nonuniform continuous rate
c) accuracy will be more
d) all of the mentioned
Answer: d
Explanation: All sentences are true except the one which says that the feeding of the tool will be at a nonuniform continuous rate. Actually, the feeding of the tool will be at a uniform continuous rate.
3. Automatic feed requires more time to finish the work.
a) true
b) false
Answer: b
Explanation: This is false. Manual feed requires more time for finishing the work. Automatic feed requires less time to finish the work.
4. Which of the following is the part of feed mechanism?
a) spindle gear
b) tumbler gear unit
c) apron mechanism
d) all of the mentioned
Answer: d
Explanation: All are the parts of feed mechanism. Apart from spindle gear, tumbler gear unit and apron mechanism, there are some other parts like fixed stud gear, change gear unit, quick change gear box and so on.
5. Feed mechanism requires manual labor.
a) true
b) false
Answer: b
Explanation: This is work. Feed mechanism removes the need of manual labor. It works automatically.
6. The feed of a cutting tool in a lathe work is the distance the tool advances for each revolution.
a) true
b) false
Answer: a
Explanation: This is the definition of the feed. This feed is also expressed in mm/revolution. In british system, it is expressed in inch per revolution.
7. What happen if feed increases?
a) cutting time increases
b) cutting time decreases
c) no effect on cutting time
d) none of the mentioned.
Answer: b
Explanation: Increased feed always reduces the cutting time. As the feed is increased, the speed of the cutting is increased and as the speed of the cutting is increased, its time will definitely decreased.
8. Increased feed_____
a) increases tool’s life
b) decreases tool’s life
c) no effect on tool’s life
d) none of the mentioned
Answer: b
Explanation: Increased feed greatly reduces the tool life. As the feed is increased, its speed will also increased. So forces acting on the tool will be more stronger, more powerful. Hence, it reduces the tool’s life.
9. Which of the following is not the part of the feed mechanism?
a) fixed stud gear
b) quick change gear box
c) feed shaft
d) none of the mentioned
Answer: d
Explanation: These all are the parts of the feed mechanism. Due to these all parts, it works more accurately and give the more-better surface finish.
Answer: c
Explanation: The proportionate tool movement for each revolution of the work is achieved through all units of the feed mechanism.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Centers-1”.
1. How many main type of centres are there in lathe ?
a) 1
b) 2
c) 3
d) 4
Answer: b
Explanation: Most commonly two types of centres are there in lathe : live and dead centres.
2. Which of the following is not the type of centre in lathe?
a) live centre
b) neutral centre
c) dead centre
d) none of the mentioned
Answer: b
Explanation: Only live centre and dead centre are there in lathe. These two centres take up the thrust due to metal cutting and the entire load of the workpiece on small bearing surface.
3. In which type of lathe centre, the hard tip is wear resistant?
a) tipped centre
b) revolving centre
c) ordinary centre
d) half centre
Answer: a
Explanation: In tipped centre, the hard tip is wear resistant. Wear resistant means they are not easily affected by friction or any other damage
4. Why lathe centres are made of very hard materials?
a) to resist deflection
b) to resist wear
c) to resist deflection and wear both
d) none of the mentioned
Answer: c
Explanation: Lathe centres are made of very hard to resist these both things-deflection and wear. The dead centre is subjected to wear due to friction.
5. Which type of centre is particularly suitable for taper turning?
a) ball centre
b) female centre
c) half centre
d) none of the mentioned
Answer: a
Explanation: Ball centre is particularly suitable for taper turning as per the definition of the ball centre. It has minimum wear and strain.
6. What is the included angle of centre for general purpose work?
a) 30
b) 45
c) 60
d) 75
Answer: c
Explanation: The included angle is usually 60 for general purpose work. Also, the included angel for heavy work is 75.
7. The shanks of all the centres are machined to the Morse 0 to 3 tapers.
a) true
b) false
Answer: b
Explanation: This is false. Generally, the shank of all the centres is machined to the Morse 0 to 6 tapers.
8. Lathe centers are mde up of very hard materials.
a) true
b) false
Answer:a
Explanation: This is true. These lathe centers are made up of very hard materials as they have to resist entire load of the workpiece and thrust.
9. The shanks of all the centres are machined to the metric 2 to 4 standard taper.
a) true
b) false
Answer: b
Explanation: This is false. Generally, the shank of all the centres are machined to the metric 4 to 6 standard taper.
10. Which of the following is the type of lathe centres?
a) ordinary centre
b) tipped centre
c) ball centre
d) all of the mentioned
Answer: d
Explanation: These all are the types of lathe centres. Apart from ordinary centre, tipped centre and ball entre, some other type centres are also there like half centre, pipe centre, revolving centre, insert type centre, self driving centre, female centre and so on.
11. Only the small high-speed steel insert is replaced.
For which type of centre, above sentence is true?
a) ball centre
b) swivel V centre
c) ordinary centre
d) none of the mentioned
Answer: d
Explanation: Non of the mentioned option is correct. Above sentence is true for insert-type centre.
12. Self-driving live centre can be used only for soft jobs.
a) true
b) false
Answer: a
Explanation: Self-driving live centre can be used only for soft jobs and not for hardened jobs. It bis used while machining the entire length of the job in one setting.
13. Grooves cut along the diameter of the centre point provide for
good gripping of the job and for getting the drive, in self-driving live centre.
a) true
b) false
Answer: b
Explanation: This is false. Grooves cut around the circumference of the centre point provide for good gripping of the job and for getting the drive.
Answer: a
Explanation: Swivel V centre is used to drill holes across the round job by using a drill bit in the head-stock spindle as per the definition of this centre. This centre is used to support a job in the V section.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Centers-2”.
1. Half centre is also known as common type centre.
a) true
b) false
Answer: b
Explanation: This is false. Ordinary centre is also known as common type centre.
2. Which type of centre is used while facing the job without disturbing the setting?
a) ball centre
b) pipe centre
c) half centre
d) revolving centre
Answer: c
Explanation: Half centre is used while facing the job without disturbing the setting as per the classification of the lathe centres. Though it is termed as half centre, little less than half is relieved at the tip portion.
3. The centres take up_______
a) thrust due to metal cutting
b) entire load of the work piece on small bearing surface
c) thrust due to metal cutting and entire load of the work piece on small bearing surface both
d) none of the mentioned
Answer: c
Explanation: The centres take up the thrust due to metal cutting and load on small bearing surface. So they are made of very hard materials.
4. A carbide or a hard alloy tip is brazed into an ordinary steel shank. For which type of centre, above sentence is true?
a) pipe centre
b) half centre
c) female centre
d) tipped centre
Answer: d
Explanation: Above statement is true for the tipped centre as per the definition of the tipped centre. The hard tip is wear resistant in case of tipped centre. For tipped centres, a tip tool is there which is made of separate material clamped on separate body.
5. The live centre is subjected to wear due to friction.
a) true
b) false
Answer: b
Explanation: This is false. The dead centre is subjected to wear due to friction.
6. In which type of lathe centre, minimum wear and strain are obtained?
a) pipe centre
b) ball centre
c) insert-type centre
d) none of the mentioned
Answer: b
Explanation: In ball centre, minimum wear and strain are obtained. This ball centre is particularly suitable for taper turning.
7. In pipe centre, friction is there.
a) true
b) false
Answer: b
Explanation: This is false. Pipe centre is frictionless. It is used for supporting pipes shells and hollow end jobs.
8. In revolving centre, a high speed steel inserted centre is supported by_____ bearings housed in a body.
a) 1
b) 3
c) 2
d) none of the mentioned
Answer: c
Explanation: In revolving centre, a high speed steel inserted centre is supported by 2 bearings housed in a body as per the definition of the revolving centre. It is used for heavy jobs and jobs revolving with high speeds.
9. Revolving centre is also known as revolving live centre.
a) true
b) false
Answer: b
Explanation: This is false. Revolving centre is also known as revolving dead centre.
10. Which of the following centre is more economical?
a) insert-type centre
b) pipe centre
c) half centre
d) none of the mentioned
Answer: a
Explanation: Insert-type centre is more economical as per the definition of this centre. In this centre, only the small high-speed steel insert is replaced.
11. Which type of centre is used while machining the entire length
of the job in one setting?
a) swivel V centre
b) female centre
c) self-driving live centre
d) pipe centre
Answer: c
Explanation: Self-driving live centre is used while machining the entire length of the job in one setting as per the working of this centre. Self driving live centre is usually mounted on the headstock.
12. Which type of centre is used to support the end of the job
where no countersink hole is permitted?
a) ordinary centre
b) half centre
c) female centre
d) none of the mentioned
Answer: c
Explanation: Female centre is used to support the end of the job where no countersink hole is permitted as per the definition of this centre. Here, countersink hole means a conical hole cut into an object.
13. Which of the following is not the type of lathe centre?
a) pipe centre
b) revolving centre
c) insert-type centre
d) none of the mentioned
Answer: d
Explanation: All are the types of lath centres. Insert type centre is more economical compare to other centres.
Answer: b
Explanation: This is false. Self-driving live centre is usually mounted on the head stock spindle.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Catch Plates and Carriers”.
1. Carriers are also known as lathe dogs.
a) true
b) false
Answer: a
Explanation: Lathe dogs term is also used for describing carriers. The carriers consist of a clamping screw.
2. Which of the following is used to drive the work during turning?
a) catch plates
b) carriers
c) both catch plates and carriers
d) none of the mentioned
Answer: c
Explanation: Both catch plates and carriers are used to drive the work during turning. A projecting pin from the catch plate or carrier fits into the slot provided in either of them.
3. The work is clamped firmly by a set screw in the lathe_____
a) catch plates
b) carriers
c) both catch plates and carriers
d) none of the mentioned
Answer: b
Explanation: The work is clamped in the lathe carriers. It is done by a set of screw. A positive drive between the lathe spindle and workpiece is also imparted.
4. The catch plates are_____
a) screwed
b) bolted
c) either screwed or bolted
d) none of the mentioned
Answer: c
Explanation: The catch plated are either screwed or bolted. A projecting pin of a single pin catch plate drives the straight end or tail of a carrier attached to the work piece.
5. The catch plates are bolted to the nose of headstock spindle.
a) true
b) false
Answer: b
Explanation: This is false. The catch plates are bolted to the nose of tailstock spindle.
6. The carrier may consists of_____
a) cast iron
b) forged steel body
c) clamping screw
d) all of the mentioned
Answer: d
Explanation: The carrier may consist of a cast iron or forged steel body and a clamping screw. To protect the finished surface from damages, a soft metal packing piece is used under this clamping screw.
7. Generally, the carrier is available in a set of 1.
a) true
b) false
Answer: b
Explanation: This is false. Generally, The carrier is available in a set of 10.
8. The tails of the carrier is meant to_____
a) locate the work piece
b) drive the work piece
c) both locate the work piece and drive the work piece
d) none of the mentioned
Answer: c
Explanation: The tail of the carriers are meant to locate and drive the work piece for turning. Two pins of a double catch plate engage with the double tail or double slotted carrier and provide uniform driver.
9. To protect the finished surface from damages, a hard metal packing piece is used under the clamping screw.
a) true
b) false
Answer: b
Explanation: This is false. To protect the finished surface from damages, a soft metal packing piece is used under the clamping screw.
10. Which of the following is the type of catch plate?
a) single pin catch plate
b) double pin catch plate
c) double slotted catch plate
d) all of the mentioned
Answer: d
Explanation: All mentioned are the types of catch plates. These are used to drive the work during turning.
11. The bent tail type is used in conjunction with_____
a) a face plate
b) a slotted catch plate
c) a face plate or a slotted catch plate
d) none of the mentioned
Answer: c
Explanation: The bent type is used in conjunction with a face plate or a slotted catch plate. A face plate consists of a circular disc bored out and threaded to sit the nose of the lathe spindle.
12. Which of the following is not true?
a) the projecting pin of a single pin catch plate drives the straight end or tail of a carrier attached to the work piece
b) two pins of a double pin catch plate engage with the double tail or double slotted carrier
c) two pins of a double pin catch plate provide non-uniform drive
d) none of the mentioned
Answer: d
Explanation: All above mentioned statements are right except the one which says that two pins of a double pin catch plate provide non-uniform drive. Actually, it provide uniform drive.
Answer: d
Explanation: All above mentioned are the types of carrier. These carriers are capable of accommodating work of wide range of diameters.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Chucks and Its Types-1”.
1. Three jaw chuck is also known as _____
a) universal chuck
b) self-centering chuck
c) universal or self-centering chuck
d) none of the mentioned
Answer: c
Explanation: Three jaw chuck is also known as universal or self centering chuck. The majority of the chucks have two sets of jaws for holding internal and external diameters.
2. A chuck is attached to_____
a) lathe spindle
b) lathe apron
c) lathe tool post
d) none of the mentioned
Answer: a
Explanation: A chuck is attached to lathe spindle. This attachment is done with the help of bolts with the back plate.
3. Back plate is screwed on the spindle nose.
a) true
b) false
Answer: a
Explanation: Back plate is screwed on the spindle nose. Accurate alignment of the chuck with the lathe axis is effected by spigotting.
4. Which type of work should be held in three jaw chuck?
a) perfectly round work
b) work with equally spaced flats
c) perfectly round work and work with equally spaced
d) none of the mentioned
Answer: c
Explanation: Only perfectly round work or work with equally spaced flats, divisible by three should be held in a three jaw chuck.
5. Which of the following chuck is also known as hydraulic chuck?
a) combination chuck
b) drill chuck
c) none of the mentioned
d) magnetic chuck
Answer: c
Explanation: The answer should be none of mentioned. None of above is known as hydraulic chuck. Actually, air chuck is known as hydraulic chuck.
6. Which of the following chuck is also known as dog chuck?
a) four jaw chuck
b) three jaw chuck
c) two jaw chuck
d) none of the mentioned
Answer: a
Explanation: Dog chuck is also used for describing the four jaw chuck. Four jaw chuck is also known as independent chuck.
7. In four jaw chuck, work can be turned within_____ mm accuracy.
a) 22
b) 2.2
c) 0.022
d) 0.0022
Answer: c
Explanation: In four jaw chuck, work can be turned within 0.022 mm accuracy.As per the theory of four jaw chuck, this chuck also provides the facility of deliberately setting the work off-centre to produce eccentric workpiece.
8. Four jaw chuck is dependent chuck.
a) true
b) false
Answer: b
Explanation: This is false. Four jaw chuck is independent chuck since each jaw can be adjusted independently.
9. Four jaw chuck can be constructed lightly as compare to self centering chuck.
a) true
b) false
Answer: b
Explanation: This is false. Four jaw chuck is much more heavily constructed than self-centering chuck.
10.Which of the following is not true regarding four jaw chuck?
a) Each jaw can be adjusted independently.
b) Movement of jaw is irreversible.
c) Movement of jaw is done by the help of square threaded screw.
d) None of the mentioned
Answer: b
Explanation: All the sentences are true except the one which says that movement of jaw is irreversible. Actually, in this chuck, movement of jaw is reversible.
11. Which of the following is not true regarding four jaw chuck?
a) The diameter of the body specifies the size of the work.
b) Concentric circles inscribed on the chuck facilitate quick
centering of the work piece.
c) Four jaw chuck has four pairs of jaws.
d) None of the mentioned
Answer: c
Explanation: All sentences are true except the one which says that four jaw chuck has four pairs of jaws. In fact, it has four independent jaws.
12. Which of the following is the part of the four jaw chuck?
a) back plate
b) shaft chuck key
c) screw
d) all of the mentioned
Answer: d
Explanation: All are parts of the chuck. Apart from back plate, shaft chuck key and screw, key socket, square thread screw, thrust pad, spindle nose are also the part of the four jaw chuck.
13. In four jaw chuck, a work piece can be set to run_____ by suitable adjustment of the jaws.
a) true
b) eccentric
c) true or eccentric
d) none of the mentioned
Answer: c
Explanation: A work piece can be set to run true or eccentric as required. In 4 jaw chuck, each works independently of the others in its own slot in a chuck body.
14. T-slots are provided on the bottom of the chuck.
a) true
b) false
Answer: b
Explanation: This is false. T-slots are provided on the face of the chuck to accommodate T bolts.
Answer: c
Explanation: T bolts are used for these both clamping irregular works and assembling balance weights Concentric circles inscribed on the chuck facillitate quick centering of the workpiece. The diameter of the body specifies the size of the work.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Chucks and Its Types-2”.
1. Generally, which type of work piece is hold in chucks?
a) of short length and small diameter
b) of large length and small diameter
c) of short length and large diameter
d) of large length and large diameter
Answer: c
Explanation: A chuck is one of the most important devices for holding and rotating a work piece in a lathe. Generally, workpiece of short length and large diameters are held in chucks.
2. The majority of three jaw chucks have three set of jaws.
a) true
b) false
Answer: b
Explanation: The above sentence is wrong. The majority of the three jaw chucks have two sets of jaws.
3. Which type of diameters does three jaw chuck hold?
a) internal diameter
b) external diameter
c) internal and external diameter both
d) none of the mentioned
Answer: c
Explanation: Three jaw chuck can hold both type of diameters : internal and external. Only perfect round work or work with equally spaced flats, divisile by three should be held in a 3 jaw chuck.
4. Which of the following is not the type of lathe chuck?
a) combination chuck
b) magnetic chuck
c) air chuck
d) none of the mentioned
Answer: d
Explanation: All are types of chucks. The all types of chucks are mentioned below.
1. four jaw chuck
2. three jaw chuck
3. two jaw chuck
4. combination chuck
5. collet chuck
6. magnetic chuck
7. drill chuck
8. hydraulically operated chuck
5. Which type of job, does the scroll perform in three jaw chuck?
a) only clamps a component in place
b) locates the component
c) clamps a component in place and locates the component
d) none of the mentioned
Answer: c
Explanation: Scroll does both jobs. The scroll not only clamps a component in place but also locates the component.This is fundamentally a practice since any wear in the scroll and/or the jaw impairs the accuracy of location.
6. Three jaw chuck is reversible.
a) true
b) false
Answer: b
Explanation: This is false. Three jaw chucks is irreversible.
7. Which of the following is not the part of four jaw chuck?
a) body
b) shaft chunk key
c) pinion
d) all of the mentioned
Answer: c
Explanation: Body and shaft chunk key are the parts of three jaw chuck but pinion is not the part of three jaw chuck. Pinion is the part of three jaw chuck.
8. Which of the following is not the part of three jaw chuck?
a) chuck key
b) crown wheel
c) back plate
d) none of the mentioned
Answer: d
Explanation: All are part of three jaw chuck. Chuck key, crown wheel and back plate are the important part of the three jaw chuck. In three jaw chuck, separate internal ans external jaws have to be used.
9. Two jaw chuck can be used as a turning mixture.
a) true
b) false
Answer: a
Explanation: As the chuck is designed with two jaws, it can be used as a turning mixture. Both jaws are adjustable and can be operted independently.
10. In combination chuck, jaws may be adjusted as_____
a) independently
b) together
c) either independently or together
d) none of the mentioned
Answer: c
Explanation: In combination chuck, both types of arrangements are possible. Combination chuck is normally a four jaw chuck.
11. Which of the following pair is correct regarding to the arrangement of the jaw?
a) four jaw – independent
b) three jaw – self centric
c) two jaw chuck – independent
d) all of the mentioned
Answer: d
Explanation: All are correct regarding the arrangement of the jaw. Both four jaw and two jaw chucks are independent chucks, while three jaw chuck is self centering chuck.
12. Which type of chuck is used in places where duplicate
work piece are to be machined?
a) four jaw chuck
b) three jaw chuck
c) two jaw chuck
d) combination chuck
Answer: d
Explanation: Combination chuck is used in places where duplicate workpieces are to be machined. One piece is accurately set as done in four jaw chuck and subsequent jobs are held by operating the centering arrangement.
13. Which of the following is not true regarding three jaw chuck?
a) if we rotate any one of three pinions, it may meshes with the teeth
b) the scroll disc, which has a spiral groove cut on the bottom face meshes with the teeth on the jaws
c) all these three jaws may be made to move simultaneously
d) none of the mentioned
Answer: b
Explanation: The scroll disc having a spiral groove cut on the top face meshes with the teeth on the jaws.
14. Which of the following is not true?
a) jobs are held by operating the centering arrangement In combination type of chuck
b) jaws may be specially machined to hold a particular type of job in two jaw chuck
c) only one jaw may be operated concentric to the centre in two jaw chuck
d) none of the mentioned
Answer: c
Explanation: All are true except the one which says that only one jaw may be operated concentric to the centre in two jaw chuck. Actually, both jaws may be operated concentric to the centre in the two jaw chuck.
Answer: c
Explanation: All the mentioned sentences are true except the one which says that both types of jaws may not be operated independently. Actually, both jaws can be operated independently.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Angel Plates and Face Plates”.
1. Angle plate is a cast iron plate.
a) true
b) false
Answer: a
Explanation: Angle plates are always used along with face plates and for its stability it is made up of iron.
2. How many machined faces do angle plates have?
a) 1
b) 2
c) 3
d) 4
Answer: b
Explanation: Angle plates have two plates. Both of these plates are placed perpendicular to each other.
3. Which of the following is provided on the faces of angle plates?
a) holes
b) slots
c) holes and slots both
d) none of the mentioned
Answer: c
Explanation: Holes and slots both are provided on the faces of angle plates so that it may be clamped on a face plate and can hold the work piece on the other face.
4. Angle plates are used in conjunction with a face plate.
a) true
b) false
Answer: a
Explanation: Angle plates are used in conjunction with a face plate. It can be easily understood by looking at the working of the angle plates.
5. In angle plates, clamping is used for______
a) elbow pipe
b) angle plate
c) both elbow pipe and angle plate
d) none of the mentioned
Answer: c
Explanation: Clamping is used for this both purposes. Angel plate is used in machining a flange of a pipe elbow.
6. Which of the following is not true for angle plates?
a) when eccentric jobs are bolted to the face plate, counter weight must be added
b) in machining a flange of a pipe elbow, the surface which holds the work piece must be placed horizontal
c) for balance weight, angle plates are used
d) none of the mentioned
Answer: d
Explanation: All sentences are true. These all are the mechanisms related to angel plates. Angel plates are used along with face plates when work can not be done by chucks or when we need higher accuracy.
7. Face plates are used with_____ accessories.
a) clamps
b) T- bolts
c) stepped block
d) all of the mentioned
Answer: d
Explanation: Face plates are used with all mentioned accessories. A face plate plate has radial plain and T slots for holding work by bolts and clamps.
8. For holding work pieces, which cannot be conveniently between centers, _____ is used.
a) three jaw chuck
b) four jaw chuck
c) face plates
d) all of the mentioned
Answer: c
Explanation: Face plates are used for these purposes. The work piece include large flat, irregular shaped workpieces, casting, jigs and fixture may be firmly clamped to a face plate for various turning operations.
9.The position of the bolts and clamps is very important in face plates.
a) true
b) false
Answer: a
Explanation: The position of the bolts and clamps is very important in face plates, if a work piece is to be clamped effectively. Various types of face plates are used for proper clamping like face plates with elongated slots, face plates with elongated radial slots and so on.
10. Which of the following is not true for face plates?
a) a face plate consists of a circular disc bored out
b) the work piece includes casting and jigs may not be clamped by using face plates
c) face plates are used as an alternative option of chucks
d) none of the mentioned
Answer: b
Explanation: All the mentioned sentences are true except one which says that the work piece includes casting and jigs may not be clamped by using face plates. The work piece includes casting and jibs may be firmly clamped by using face plates.
11. Face plates has_____ for holding work by bolts and clamps.
a) radial plain
b) slots of T type
c) both radial plain and T slots
d) none of the mentioned
Answer: c
Explanation: These both are used for holding work by bolts and clamps. This face plate is a circular disc bored out and threaded to sit the nose of the lathe spindle.
12. Faces of angle plates are_____ to each other.
a) parallel
b) perpendicular
c) inclined
d) none of the mentioned
Answer: b
Explanation: Faces are perpendicular to each other in case of angle plates. This angel plates are used in balance weight, ello pipe and so on.
Answer: c
Explanation: Work piece can be hold on a face plate by bolts and clamps for various turning operations. Although apart from turning, we can also perform various operations.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Mandrels and Its Types-1”.
1. Mandrels are used for holding solid work piece.
a) true
b) false
Answer: b
Explanation: This is false. Mandrels are used for holding hollow work piece.
2. Which of the following is not true?
a) the work piece must have their bores machined accurately
b) the mandrels are to be located before the centres
c) mandrels are used for turning concentric
d) none of the mentioned
Answer: b
Explanation: All the sentences are true except one which says that the mandrel are to be located before the centres. The mandrels should be located in between the centres.
3. Mandrels are driven by_____
a) catch plates
b) carriers
c) catch plates and carriers both
d) none of the mentioned
Answer: c
Explanation: Both are used to drive the mandrels. Catch plates are either screwed or bolted to the nose of the tailstock spindle while the carriers consist of a cast iron or forged steel body.
4. The diameters at the beginning are slightly smaller and flattened.
a) true
b) false
Answer: b
Explanation: This is false. The diameters at the end are slightly smaller and flattened to provide effective gripping surface of the lathe dog set screw..
5. Why gripping mandrels are made of high carbon steel?
a) to avoid distortion
b) to avoid wear
c) both to avoid distortion and wear
d) none of the mentioned
Answer: c
Explanation: The gripping mandrels are made of high carbon steel to avoid both distortion and wear. Along with this, the gripping power of this mandrels is not much.
6. Less common but very often used method is_____
a) parallel mandrel
b) threaded cone mandrel
c) both parallel mandrel and threaded cone mandrel
d) none of the mentioned
Answer: c
Explanation: There are several types of mandrels in use depending upon the specific requirements of the job. Less common but very often used is the parallel mandrel and the threaded cone mandrel.
7. The mandrels are driven into the work by tapping by_____
a) copper hammers
b) lead hammers
c) copper hammer and lead hammer both
d) none of the mentioned
Answer: c
Explanation: The mandrels are driven into the work by tapping with copper and lead hammers or by an arbor press or by mandrel press.
8. Which of the following is not true?
a) the mandrels are used depending upon the specific requirements of the job.
b) the gripping power of mandrels is very high
c) effective gripping surface of the lathe dog set screw is done
d) none of the mentioned
Answer: b
Explanation: All mentiones sentences are true except one which says that the gripping power of the mandrel is very high. The gripping power of the mandrels is not much.
9. Which of the following is the type of mandrels?
a) plain mandrels
b) stepped mandrels
c) collar mandrels
d) all of the mentioned
Answer: d
Explanation: All of mentioned are the types of mandrels. Apart from these other types of mandrels are also there like expansion mandrel, gang mandrel and so on.
10. Turning a job on mandrel should be with heavy cuts.
a) true
b) false
Answer: b
Explanation: This is false. Turning a job on mandrels should be with light cuts.
11. Which of the following mandrels are most commonly used?
a) plain mandrels
b) stepped mandrels
c) collar mandrels
d) none of the mentioned
Answer: a
Explanation: The plain mandrels are most commonly used. It is also known as simple mandrel.
12. Plain mandrels are used where large number of identical work pieces having standard size holes are required to be mounted.
a) true
b) false
Answer: a
Explanation: It can be easily understood from definition of the plain mandrels. In this mandrel, the size of the mandrel is indicated at the flat end portion of the mandrel.
13. The difference in diameter is_____ mm per 100 mm length in case of the plain mandrels.
a) 1to 2
b) 4 to 5
c) 8 to 10
d) 10 to 12
Answer: a
Explanation: The difference in diameter is 1 to 2 mm per 100 mm length in case of the plain mandrels. The taper is provided for proper gripping of the work.
14. Plain mandrel is suitable for_____ size of bore.
a) only one
b) two
c) more than two
d) none of the mentioned
Answer: a
Explanation: Plain mandrel is suitable for only one size of bore. For different sizes of holes in workpieces different diameters of mandrels are used.
Answer: c
Explanation: In plain mandrels, length varies from 55 to 430 mm. The body of this mandrel is slightly tapered.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Mandrels and Its Types-2”.
1. Which of the following is not true in case of plain mandrel?
a) the body of the mandrel is heavily tapered
b) the taper is provided for proper gripping of the work piece
c) the size of mandrel is indicated at the flat end portion of the mandrel
d) none of the mentioned
Answer: a
Explanation: All the mentioned sentences are true except the one which says that the body of mandrel is heavily tapered. Actually, its body is just slightly tapered.
2. Stepped mandrels are used for turning______
a) collars
b) washers
c) odd sized jobs
d) all of the mentioned
Answer: d
Explanation: Stepped mandrels are used for collars, washers, odd sized jobs and so on. The stepped mandrel will have steps of different diameters to accommodate different workpieces.
3. Which of the following is not true about steeped mandrels?
a) it can have steps of different diameters
b) it can accommodate different work pieces having different sizes of holes
c) removal of mandrel is necessary each time
d) none of the mentioned
Answer: c
Explanation: Removal of mandrel is not necessary each time. Sometimes, it can accommodate work piece without removing the mandrel.
4. In collar mandrel, mandrels are provided with solid collars for turning work pieces having holes of small diameters.
a) true
b) false
Answer: b
Explanation: In collar mandrel, mandrels are provided with solid collars for turning work pieces having holes of large diameters.
5. Collar mandrel fits better than a solid mandrel of equal size.
a) true
b) false
Answer: a
Explanation: The construction of collar mandrel reduces its weight considerably and that’s the reason why it fits better than solid mandrel of equal size.
6. Which of the following mandrel is mostly used for work piece having internal threads?
a) stepped mandrel
b) collar mandrel
c) gang mandrel
d) none of the mentioned
Answer: d
Explanation: Answer should be none of the mentioned. Screw mandrel is mostly used for work piece having internal threads.
7. In screwed mandrel, the threads_____
a) are left handed
b) are right handed
c) may be left or right handed
d) none of the mentioned
Answer: c
Explanation: In screwed mandrel, the threads may be left or right handed. Screw mandrels are used for turning the external surfaces of screwed flanges, back plates of chucks etc.
8. Which of the following is not true for screwed mandrel?
a) the screw mandrel is threaded at one end with a collar
b) the work piece are screwed on to the threaded portion against the collar for machining
c) screw mandrels are used for turning the internal surfaces of screwed flanges, back plates of chucks etc
d) none of the mentioned
Answer: d
Explanation: All the mentioned sentences are true except the one which says that screw mandrels are used for turning the internal surfaces of screwed flanges, back plates of chucks etc. Actually, screw mandrels are used for turning the external surfaces of screwed flanges, back plates of chucks etc.
9. P mandrel consists of a solid one attached to one end and a sliding cone and adjusting nut on the other end. Identify P.
a) plain mandrel
b) stepped mandrel
c) cone mandrel
d) none of the mentioned
Answer: c
Explanation: This is the property of cone mandrel. This type of mandrel is suitable for holding workpieces of different diameters.
10. The cone should be more tightened upon the work piece in cone mandrels.
a) true
b) false
Answer: b
Explanation: This is false. The cone should not be tightened too much over the work piece otherwise the outer surface the outer edge may get spoiled.
11. Which of the following is the part of gang mandrel?
a) fixed collar
b) movable collar
c) nut
d) all of the mentioned
Answer: d
Explanation: All of the mentioned are the parts of the gang mandrel. A set of hollow workpieces are mounted on this mandrel and tightened with a nut. The friction between the sides of the work and collar drives the work without any slippage.
12. In expansion mandrel, how many longitudinal slots are there?
a) 1
b) 2
c) 3
d) 4
Answer: c
Explanation: 3 longitudinal slots are there in expansion mandrel. This type of mandrels are very useful in repair workshops where the diameters of workpieces differ frequently from standard sizes.
13. P mandrel is often provided with adapters or sleeves of different diameters to fit a wide variety of work piece bores. Identify P.
a) gang mandrel
b) expansion mandrel
c) collar mandrel
d) none of the mentioned
Answer: b
Explanation: Expansion mandrel is often provided with adapters or sleeves of different diameters to fit a wide variety of work piece bores. The expansion mandrel has a tapered pin driven into a sleeve which is parallel outside and tapered inside.
14. Expanding mandrels are also available with taper shank.
a) true
b) false
Answer: a
Explanation: Expanding mandrels are also available with taper shank to suit the spindle taper of the lathe.
Answer: c
Explanation: Expanding mandrels can be plane or threaded at one end. Expansion mandrels are also known as expanding mandrels and this is the property of expansion mandrels.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Steady Rests and Its Types-1”.
1. P is lathe accessory used to give extra support for a long slender work pieces. Identify P.
a) steady rests
b) tool post
c) mandrels
d) none of the mentioned
Answer: a
Explanation: Steady rests is lathe accessory used to give extra support for a long slender work pieces in addition to the centre support during turning.
2. Rests are used when support from_____ end cannot be given for drilling, reaming, tapping etc.
a) headstock
b) tailstock
c) apron
d) none of the mentioned
Answer: b
Explanation: Rests are used when support from tailstock end cannot be given for drilling, reaming, tapping etc. These rests are fixed at some intermediate points to prevent bonding of work pieces due to their own weight.
3. The jaws can be moved readily_____ by means of adjusting screws in fixed steady rest.
a) in
b) out
c) either in or out
d) none of the mentioned
Answer: c
Explanation: The jaws can be moved readily in or out by means of adjusting screws. The three jaws are adjusted on a trued cylindrical face of the work piece.
4. The rest are fixed to prevent the vibration set up due to_____
a) own weight
b) chattering forces
c) own weight and chattering forces both
d) none of the mentioned
Answer: b
Explanation: The rest are fixed to prevent the vibration set up due to chattering forces. The use of this rest eliminates the chatter.
5. Which of the following is not true for rests?
a) rests are used when the length of the work piece is 10 to 15 times the diameters
b) rests help in achieving greater accuracy in machining
c) rests permit only light cuts
d) none of the mentioned
Answer: c
Explanation: All mentioned sentences are true except the one which says that the rests are permits only light cuts. Rests permit only heavy cuts.
6. Which of the following is the type of steady rest?
a) fixed steady rest
b) follower steady rest
c) both fixed steady rest and follower steady rest
d) none of the mentioned
Answer: c
Explanation: Both are the types of steady rest. A fixed steady rest is fixed to the lathe bed while follower steady rest consists of a c like frame.
7. Which of the following are the parts of fixed rest?
a) adjustable pads
b) locking screw
c) bearing pads
d) all of the mentioned
Answer: d
Explanation: All above mentioned are the parts of fixed rest. Apart from these, base, bed clamp, hinge etc. are also the parts of fixed steady rest.
8. Fixed steady rest is stationary.
a) true
b) false
Answer: a
Explanation: Fixed steady rest is stationary because it is fixed to the lathe bed.
9. Fixed steady rest gives support at_____ fixed place only.
a) one
b) two
c) more than two
d) none of the mentioned
Answer: a
Explanation: Fixed steady rest gives support at one fixed place only. A fixed steady rest can be clamped at any desired position on the lathe bed.
10. Fixed steady rest consists of a frame containing_____ adjustable pad.
a) 1
b) 2
c) 3
d) 4
Answer: c
Explanation: Fixed steady rest consists of a frame containing three adjustable pads. These pads are also known as jaws.
Answer: b
Explanation: This is false. The base of the frame is machined to suit the inside ways of the lathe bed in fixed steady rest.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Steady Rests and Its Types-2”.
1. Which portion of the bed is hinged at the back in fixed steady rest?
a) top
b) middle
c) bottom
d) none of the mentioned
Answer: a
Explanation: The top portion of the bed is hinged at the back to permit the top to be lifted or assembled to the bottom half.
2. In fixed steady rest, a fixed steady can be clamped_____
a) parallel to lathe bed
b) perpendicular to lathe bed
c) at any desired position on the lathe bed
d) none of the mentioned
Answer: c
Explanation: A fixed steady can be clamped at any desired position on the lathe bed. This is done with the help of base clamping screw.
3. In fixed steady rests, these rests are fixed at some intermediate points to prevent bending of work pieces due to_____
a) own weight
b) chattering forces
c) own weight and chattering forces both
d) none of the mentioned
Answer: a
Explanation: These rests are fixed at some intermediate points to prevent bending of work pieces due to their own weight. This rests help in achieving greater accuracy in machining and permit heavier cuts.
4. Which of the following is not true for fixed steady rest?
a) the three pads or jaws are adjusted on a trued cylindrical face of the work piece
b) a fixed steady can be clamped by the base clamping screw
c) pads are also known as jaws
d) none of the mentioned
Answer: d
Explanation: The all above mentioned are true. Jaws can also be termed as pads and also a fixed steady rest can be clamped by base clamping screws.
5. Which of the following is also known as the travelling steady?
a) fixed steady rest
b) follower steady rest
c) fixed steady rest and follower steady rest both
d) none of the mentioned
Answer: b
Explanation: Follower steady rest is also termed as travelling steady. Adjustable screw, bearing pads, frame, lock nut etc. are the main parts of this machine.
6. Follower steady rest consists of_____ like frame.
a) D
b) C
c) S
d) None of the mentioned
Answer: b
Explanation: Follower steady rest consists of ‘C’ like frame. These type of rest is used in finish turning operations or where the entire length of the workpiece is to be turned at a stretch, without disturbing the setting.
7. How many adjustable pads does follower steady rest has?
a) 1
b) 2
c) 3
d) 4
Answer: b
Explanation: Follower steady rest has 2 adjustable pads. These pads are helpful for supporting the work.
8. In follower steady rest, there is a pad which is located_____ the cutting tool.
a) in front of
b) opposite to
c) besides
d) none of the mentioned
Answer: b
Explanation: The pad is located opposite to the cutting tool and the other pad bears the top of the workpiece to prevent from spinning up due to the thrust of the load.
9. In follower steady rest, the work piece is machined slightly wider
than the jaws.
a) true
b) false
Answer: a
Explanation: The piece of work is machined slightly wider than jaws to provide bearing surface. For this, the machine surface is brought under the jaws and the tool is set slightly in advanced position than the jaws.
10. Which type feed is provided in follower steady rest?
a) longitudinal
b) cross
c) both cross and longitudinal
d) none of the mentioned
Answer: a
Explanation: The tool is fed longitudinally in follower steady rest and the jaws follow the tool giving support where cutting actually take place..
Answer: d
Explanation: All above sentences are true except the sentence which says that support is discontinuous to the entire length of cutting.The support is continuous to the entire length of cutting.
This set of Machine Tools and Machining Interview Questions and Answers focuses on “Lathe : Tool Material’s Types”
1. Which of the following tool material is not suitable for small diameters?
a) carbon steel
b) carbides
c) carbon and carbides both
d) none of the mentioned
Answer: b
Explanation: Carbides are not suitable for small diameters as these carbides has higher speeds and generally used in rapid stock removal.
2. Which of the following cutting material cannot be forged to shape easily?
a) carbides
b) ceramic
c) stellites
d) none of the mentioned
Answer: c
Explanation: Stellites cannot be forged to shape easily because they are very brittle in nature.
3. Which of the following is not the disadvantage of diamonds?
a) incompressible
b) readily conducts heat
c) rigid machine are required
d) all of the mentioned
Answer: c
Explanation: For ceramics, we need rigid machines. The other two mentioned disadvantages are true for diamond.
4. High speed steel has an excessive wear on______
a) castings
b) hard materials
c) casting and hard materials both
d) none of the mentioned
Answer: c
Explanation: It has excessive wear on casting and hard materials and that’s why can only perform slow and medium cutting speeds.
5. Which of the following has poor shock resistant?
a) carbides
b) diamonds
c) ceramics
d) none of the mentioned
Answer: c
Explanation: Ceramic has poor shock resistant. Apart from this, it has high wear resistance and again has very high stock removal rate.
6. In which tool material, rigid machines are required?
a) ceramics
b) carbon steel
c) diamonds
d) all of the mentioned
Answer: a
Explanation: Ceramics are used for this purpose. They are not suitable for intermittent cut and even for small diameters.
7. Machine tools must be tough enough to withstand_____
a) shock
b) vibration
c) both shock and vibration
d) none of the mentioned
Answer: c
Explanation: Machine tools must be tough enough to withstand these both in order to provide stability against downward pressure and to perform the job more accurately.
8. Carbides are used in_____
a) rapid stock removal
b) higher speeds
c) rapid stock removal and higher speed both
d) none of the mentioned
Answer: c
Explanation: Carbides are used for these both reasons. But they are not used for comparatively small jobs.
9. “Light finishing cuts in expensive forming tools”- this quality is applicable to_____
a) carbides
b) ceramics
c) stellites
d) none of the mentioned
Answer: d
Explanation: The answer should be none of mentioned. This is the quality of carbon steel.
Answer: c
Explanation: High speed steel has some advanced quality and so it is very accurate even on small diameters. So it is easy to grind high speed steel. Again, this high speed steel is generally used for intermittent cut.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Tool Material’s Types-2”.
1. “High compressive strength with negative rake” – this is applicable to_____
a) carbides
b) diamonds
c) carbon steel
d) none of the mentioned
Answer: a
Explanation: This is the quality of carbides. That’s why they are not suitable for very small diameters.
2. Which of the following tool material has excessive wear?
a) carbon steel
b) high speed steel
c) carbon steel and high speed steel both
d) none of the mentioned
Answer: c
Explanation: These both materials have excessive wear. They have excessive wear on castings and hard materials.
3. Stellites is good for metal cutting application.
a) true
b) false
Answer: b
Explanation: This is false. Stellites is good for non metal cutting application.
4. Which of the following is not the use of diamond?
a) good for finishing work
b) suitable for cutting hard metals
c) rapid stock removal
d) all of the mentioned
Answer: c
Explanation: Diamond is not used for rapid stock removal. For rapid stock removal, carbides and ceramics are used.
5. For general purpose, which type of cutting tool is used in lathe?
a) single point
b) multi point
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: For general purpose, single point cutting tool is used. Like both shaper and planer are single point cutting tool that only cut in straight line.
6. For specific purpose, which type of cutting tool is used in lathe?
a) single point
b) multi point
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: For specific purpose, multi point cutting tool is used. Milling and drilling are generally multi point cutting tool.
7. Ceramics are suitable for intermittent cut.
a) true
b) false
Answer: b
Explanation: This is false. Ceramics are not suitable for intermittent cut.
8. Which of the following is not the type of cutting tool material?
a) carbon steel
b) stellites
c) diamond
d) none of the mentioned
Answer: d
Explanation: The answer should be none of the mentioned. All are the types of cutting tool material.
9. Which of the following is very brittle?
a) stellites
b) diamond
c) both diamond and stellites
d) none of the mentioned
Answer: a
Explanation: Stellites are very brittle in nature. They even can’t be forged to shape.
Answer: c
Explanation: Ceramics can machine hard metals effectively and also has higher compressive strength with negative rake. Diamonds are good for finishing work and also suitable for cutting hard materials.
This set of Machine Tools and Machining Questions and Answers for freshers focuses on “Lathe : Classification of Cutting Tools”
1. Lathe cutting tool can be classified according to_____
a) manufacturing of tool
b) method of holding tool
c) method of using tool
d) all of the mentioned
Answer: d
Explanation: Cutting tool can be classified according to all mentioned parameters. Generally in lathe we use single point cutting tools.
2. Which of the following cutting tool can have single roller?
a) boring tool
b) knurling tool
c) both boring tool and knurling tool
d) none of the mentioned
Answer: c
Explanation: Both boring tool and knurling tool can have single roller. Generally, boring tool is used to enlarge the hole. Knurling is used when we need a pattern of straight, cross and angular lines cutting each other.
3. Lathe cutting tool can be classified as right hand and left hand according to_______
a) method of using the tool
b) method of holding the tool
c) method of applying feed
d) none of the mentioned
Answer: c
Explanation: Lathe cutting tool can be classified as right hand and left hand according to method of applying feed. Here, feed is the distance the tool advances for each revolution of the work.
4. Which of the following is not the type of left hand type cutting tool?
a) roughing tool
b) facing tool
c) finishing tool
d) none of the mentioned
Answer: d
Explanation: All are the types of left hand cutting tool. Facing, roughing and finishing are one kind of turning operations often carried out on lathe.
5. According to the method of using the tool, lathe cutting tool can be classified as_______
a) turning
b) grooving
c) forming
d) all of the mentioned
Answer: d
Explanation: According to the method of using the tool, lathe cutting tool can be classified as turning, grooving, forming, chamfering, internal thread cutting, parting-off and so on.
6. Which of the following is not the type of classification as per the method of manufacturing the tool?
a) tipped tool, which is brazed to the carbon steel shank
b) tipped tool, which is fastened mechanically to the carbon steel shank
c) grooving
d) none of the mentioned
Answer: c
Explanation: Here, grooving is not the type of classification according to the method of manufacturing the tool. Grooving is the type of classification according to the method of using the tool.
7. “Tool bit inserted in the holder and solid tool” – is included in the classification according to the_____
a) method of using tool
b) method of manufacturing tool
c) method of applying feed
d) none of the mentioned
Answer: d
Explanation: All options are incorrect. Answer should be none of mentioned. It is suitable with the classification of cutting tool as per the method of holding the tool.
8. ‘Internal thread cutting’- is suitable with the classification of cutting tool according to the______
a) method of using the tool
b) method of holding the tool
c) method of manufacturing the tool
d) none of the mentioned
Answer: a
Explanation: It can be easily seen from the classification of cutting tool. Apart from internal thread cutting, boring, facing, forming etc. are also included in this category.
9. ‘Round nose’ – is suitable with the classification of cutting tool according to the______
a) method of holding tool
b) method of holding tool
c) method of the applying feed
d) none of the mentioned
Answer: c
Explanation: It can be easily understood by looking at the classification of cutting tool. Apart from round nose, right hand tool and left hand tool are also included in this category.
10. ‘Parting-off’ – is suitable with the classification of cutting tool according to the______
a) method of manufacturing the tool
b) method of holding the tool
c) method of using the tool
d) none of the mentioned
Answer: c
Explanation: ‘Parting-off’ – is suitable with the classification of cutting tool according to the method of using the tool. This parting uses a blade like cutting tool into workpiece in order to cut the metal at the speed of spindle.
11.The mentioned image indicates_____ tool.
machine-tools-questions-answers-freshers-q11
a) roughing tool
b) facing tool
c) parting tool
d) none of the mentioned
Answer: c
Explanation: The mentioned image indicates parting tool. Its a narrow-bladed tool used in lathe.
12. The mentioned image indicates_____ tool.
machine-tools-questions-answers-freshers-q12
a) round nose grooving
b) round nose turning
c) round corner forming
d) none of the mentioned
Answer: a
Explanation: The mentioned image indicates round nose grooving tool. Round nose froove tools are used for finer surface finish.
13.The mentioned image indicates_____ tool.
machine-tools-questions-answers-freshers-q13
a) round nose grooving
b) round nose turning
c) round corner forming
d) none of the mentioned
Answer: b
Explanation: The mentioned image indicates round nose turning tool. This tool is used in turning in lathe.
Answer: a
Explanation: The mentioned image indicates right hand finishing tool. Two types of hand tools are there: right hand finishing hand tool and left hand finishing tool.
This set of Machine Tools and Machining Inteview Questions and Answers for freshers focuses on “Lathe : Operations”.
1. For lathe operations, work piece can be hold _____
a) between centres
b) on mandrel
c) either between centres or on mandrel
d) none of the mentioned
Answer: c
Explanation: Work piece can be hold either between centers or on mandrel. Mandrels are used for holding hollow workpieces for turning concentric to the bore.
2. Which of the following is used to drive the work piece?
a) carriers
b) catch plates
c) both carriers and catch plates
d) none of the mentioned
Answer: c
Explanation: Work piece can be driven by using both of these. Catch plates are either screwed or bolted to the nose of the tailstock spindle while the carriers consists of a cast iron or forged steel body.
3. Drilling is performed by holding the work by a chuck.
a) true
b) false
Answer: a
Explanation: It can be seen from the working of lathe operations. Several types of chucks are there like 4 jaw chuck, 3 jaw chuck and so on.
4. Knurling can be performed by special attachments.
a) true
b) false
Answer: b
Explanation: This is false. Knurling can be done by a chuck on holding work piece between centres.
5. Grinding can be performed by______
a) using faceplates or angle plates
b) using chucks
c) special attachments
d) none of the mentioned
Answer: c
Explanation: Grinding can be done by special attachments. Grinding is a type of machining using an abrasive type of wheel as the cutting tool.
6. Taper boring and the under boring can be performed by______
a) centers
b) face plates or angle plates
c) special attachments
d) none of the mentioned
Answer: b
Explanation: Both types of plates can be used for this purpose. A face plate consists of a circular disk bored out and threaded to sit the nose of the lathe spindle while angel plate is a cast iron plate having two faces machined to make them absolutely at right angles to each other.
7. Milling can be performed by _____
a) centres
b) face plates or angel plates
c) chucks
d) special attachments
Answer: d
Explanation: Milling can be performed by special attachments. Milling machine is a machine tool that removes metal as the work is fed against a rotating multipoint cutter.
8. Spinning can be done by_____
a) centres
b) face plates or angle plates
c) special attachments
d) none of the mentioned
Answer: a
Explanation: This operation can be done by using centres. Spining winding is also done by this method.
9. Reaming and counter boring can be performed by______
a) centres
b) face plates and angle plates
c) special attachments
d) none of the mentioned
Answer: b
Explanation: Both types of operations can be performed by using plates. Apart from that, parting off, internal thread cutting, undercutting are also performed by this method.
Answer: b
Explanation: This is false. Eccentric type of turning can be performed by using centres or chucks.
This set of Machine Tools and Machining Questions and Answers for experienced focuses on “Lathe : Taper and Taper Turning”.
1. A taper may be defined as a uniform gradual_____ along the length of the job.
a) increase
b) decrease
c) increase or decrease
d) none of the mentioned
Answer: c
Explanation: A taper may be defined as a uniform gradual increase or decrease along the length of the job. Taper turning can be measured by from tool method, tailstock offset method, compound slide method and so on.
2. The taper is measured in terms of radius along the length of the job.
a) true
b) false
Answer: b
Explanation: This is false. The taper is measured in terms of diameter along the length of job.
3. In a lathe, taper turning means to produce a_____ surface by gradually decreasing the value of diameter from a cylindrical work piece.
a) conical surface
b) flat surface
c) both conical and flat surface
d) none of the mentioned
Answer: a
Explanation: Taper turning means to produce a conical surface by gradually decreasing the value of diameter from a cylindrical work piece lathe. Two types of tapers are there: internal and external taper.
4. Which of the following is not true for taper turning?
a) taper turning is one type of lathe operation
b) the amount of taper is specified by the ratio of its length to the difference in the diameter of the taper
c) amount of taper is designated by the letter K
d) none of the mentioned
Answer: b
Explanation: All the sentences are true except the sentence which says that the amount of taper is specified by the ratio of its length to the difference in the diameter of the taper. The amount of taper is specified by the ratio of difference in the diameters of the taper to its length.
5. Amount of taper in a work piece is termed as conicity.
a) true
b) false
Answer: a
Explanation: It can be easily understood by the definition of taper. For taper or conicity feed is provided. Two types of feeds are there: manual feed and power feed.
6. The SI unit of taper is_____
a) meter
b) centimeter
c) millimeter
d) none of the mentioned
Answer: d
Explanation: Taper is ratio of same quantity. It is unitless.
7. Full taper angle is also known as angle of taper.
a) true
b) false
Answer: b
Explanation: This is false. Half taper angle is also known as angle of taper.
8. Which of the following is the right formula for taper?
a) K= / L
b) K= L /
c) K= D/ L
d) none of the mentioned
Answer: a
Explanation: K= / L – It is the basic formula used for calculating taper. Here k=taper, D and d are diameters and l is length.
9. Find the value of K. D= 90 mm, d=80 mm, L=1cm.
a) 1
b) 10
c) 100
d) none of the mentioned
Answer: a
Explanation: 1 cm = 10 mm. From the formula K= /L, K can be easily calculated.
10. Find the value of d. K=1/10, L= 10 cm, D=65 mm.
a) 45 mm
b) 55 cm
c) 75 mm
d) none of the mentioned
Answer: d
Explanation: Answer should be 55 mm. It can be easily calculated from the formula K= /L.
Answer: c
Explanation: As per the definition of the taper turning. Taper is a shape in which diameters of the both ends are different. It can be easily seen from this figure.
This set of Machine Tools and Machining Interview Questions and Answers for experienced focuses on “Lathe : Methods of Taper Turning”.
1. Which of the following is not the method of taper turning?
a) compound rest method
b) tailstock offset method
c) attachment method
d) none of the mentioned
Answer: d
Explanation: All are methods of taper turning.By using compound rest method and and attachment method, both internal and external taper can be turned while tailstock offset method is used only for external tapers.
2. From tool method is used where accuracy is the major criterion.
a) true
b) false
Answer: b
Explanation: This is false. From tool method is used when accuracy is not the major criterion.The form tool should be set at right angels to the axis of the work.
3. From tool method is generally used for_____ production for producing_____ length of taper.
a) mass, small
b) mass, long
c) little, small
d) little, long
Answer: a
Explanation: This method is used for mass production for producing small length of taper.
4. Tailstock method is highly suitable for producing steep tapers.
a) true
b) false
Answer: b
Explanation: This is false. Tailstock method is not suitable for producing steep tapers.
5. Attachment method can produce only small taper.
a) true
b) false
Answer:
Explanation: This is false. Lengthy taper can be produced by this method.
6. In compound slide method, which of the following is swiveled?
a) top slide
b) swivel base
c) apron
d) none of the mentioned
Answer: a
Explanation: Top slide is swiveled in this method. It is swiveled to half the included angel of the taper.
7. In compound slide method, one part of compound rest is swiveled to_____ the included angle of the taper.
a) the same as
b) half
c) double
d) none of the mentioned
Answer: b
Explanation: In compound slide method, one part of compound rest is swiveled . We can easily set this compound slide.
8. In compound rest method, the amount of taper for setting the angle is calculated from this formula, tan of angle of taper =_____
a) / L
b) / 2L
c) / 4L
d) none of the mentioned
Answer: b
Explanation: / 4L – this is the formula for the tan of the angel of taper. Taper is the shape in which the diameter of the both ends are different.
9. Which type of tapers can be produced by using compound rest method?
a) internal
b) external
c) both internal and external
d) none of the mentioned
Answer: c
Explanation: Both internal and external taper can be produced by using compound slide method. But there is one disadvantage. We can only give hand feed so we can’t expect a high accurate and mass work.
10. Which of the following is not true for compound slide method?
a) threads, which are there on taper portion cannot be produced
b) steep taper cannot be produced
c) taper length is limited to the movement of the top slide
d) none of the mentioned
Answer: b
Explanation: All mentioned sentences are true except the sentence which says that steep taper can’t produced by this method. Steep taper can be produced by this method.
11. In attachment method, the bar having graduations in degree is set at the_____ with the lathe axis.
a) 0 degree
b) 90 degree
c) any desired angle
d) 180 degree
Answer: c
Explanation: The bar is set at any desired angle with the lathe axis. The principle of turning taper by attachment is to guide the tool in a straight path set an angel to the axis of rotation of the work piece, while the work is being revolved between centers or by a chuck aligned to the lathe axis.
12. In compound slide method, taper length is limited to the movement of_____
a) apron
b) swivel base
c) top slide
d) none of the mentioned
Answer: c
Explanation: Taper length is limited to the movement of top slide in this method. Along with this, easily setting of the compound slide can be done easily.
13. The taper can be turned up to maximum setting angle of_____ for both outside and inside tapers with taper attachment and automatic feed.
a) 5 to 6 degree
b) 1 to 2 degree
c) 10 to 12 degree
d) none of the mentioned
Answer: c
Explanation: The taper can be turned up to maximum setting angle of 10 to 12 degree for both outside and inside tapers with taper attachment and automatic feed.
14. Attachment method is most suitable for producing duplicate tapers.
a) true
b) false
Answer: a
Explanation: Attachment method is most suitable for producing duplicate tapers because the change in length of job does not affect the taper.
Answer: b
Explanation: All the sentences are true except the sentence which says that the alignment of the lathe center is disturbed. The alignment of the lathe center is not disturbed in attachment method.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Lathe : Methods of Taper Turning-2”.
1. In tailstock offset method, the job is held at an angle and the tool moves______ to the axis.
a) parallel
b) perpendicular
c) at 45 degree
d) none of the mentioned
Answer: a
Explanation: The tool moves parallel to the axis in this method. the body of the tailstock is shifted on its base to an amount corresponding to the angle of taper.
2. In tailstock method, the angle at which the axis of rotation of the job is shifted is equal to______ the angle of taper.
a) half
b) double
c) triple
d) none of the mentioned
Answer: a
Explanation: This is angle is equal to half the angle of taper. This taper can be turned between centers only.
3. In tailstock method, body of the tailstock is made to slide on its base_____ from the operation.
a) towards
b) away
c) either towards or away
d) none of the mentioned
Answer: c
Explanation: In tailstock method, body of the tailstock is made to slide on its base either away or towards from the operation. This operation is done with the help of setover screw.
4. The form tool should be set parallel to the axis of the work.
a) true
b) false
Answer: b
Explanation: This is false. The form tool should be at right angle to the axis of the work.
5. Which type of taper is generally turned in tailstock method?
a) internal
b) external
c) both internal and external
d) none of the mentioned
Answer: b
Explanation: Only external taper can be turned in this method. Generally for internal threads this method is not used.
6. Which of the following is not true for tailstock method?
a) the body of tailstock is shifted on its base to an amount corresponding to the angle of taper
b) the movement of tailstock is made by a setover screw
c) accurate setting of the offset is easy
d) none of the mentioned
Answer: c
Explanation: All the mentioned sentences are true except one which says that accurate setting of the offset is easy. Actually, accurate setting of the offset is difficult in this method.
7. Which of the following is not true for tailstock method?
a) the taper can be turned between centres only
b) duplicate tapers can be produced
c) the alignment of the lathe centres will be disturbed
d) none of the mentioned
Answer: d
Explanation: All the above sentences are true. These all sentences are related with tailstock method in which the maximum length of the taper can be produced.
8. Which of the following is the benefit of tailstock method?
a) power feed can be given
b) good surface finish can be obtained
c) maximum length of the taper can be produced
d) all of the mentioned
Answer: d
Explanation: These all are the benefits of the tailstock method. Apart from these benefits, we have some other benefits too like external threads on taper portion can be produced, duplicate tapers can be produced and so on.
9. Tailstock method damage the centre drilled holes of the work.
a) true
b) false
Answer: a
Explanation: This is the disadvantage of this method. Apart from it, it has other big disadvantage that only external taper can be produced.
10. The taper turning attachment consists essentially of a frame which is attached to the_____ end of the lathe bed.
a) front
b) rear
c) both front and rear
d) none of the mentioned
Answer: b
Explanation: The taper turning attachment consists essentially of a frame which is attached to the rear end of the lathe bed. This attachment is provided only on a few modern lathes.
11. Only hand feed is possible in compound slide method.
a) true
b) false
Answer: a
Explanation: This is the biggest disadvantage of this method. Also, threads on taper portion cannot be produced.
12. In attachment method, cross-slide must be made_____ the lead screw.
a) fixed with
b) free from
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Cross slide must be made free from the lead screw in this method. The tool mounted on the cross-slide will follow the angular path.
13. Which type of tapers can be produced by attachment method?
a) internal
b) external
c) both internal and external
d) none of the mentioned
Answer: c
Explanation: Both types of tapers can be produced by attachment method. Apart from this, good surface finish is also obtained as well as the alignment of the lathe centers is not disturbed.
14. In attachment method, the angle of swiveling the guide bar can be determined from this equation, tan of angle =______
a) / L
b) / 2L
c) / 4L
d) none of the mentioned
Answer: b
Explanation: Here, D and d denotes diameters and L denotes length. The tan of angel is also known as the angel of swiveling the guide bar.
Answer: b
Explanation: This is false. Only limited taper angle can be turned by this method.
This set of Machine Tools and Machining Test focuses on “Lathe : Thread Cutting”.
1. The threading tool is clamped in the tool post on the compound slide.
a) true
b) false
Answer: a
Explanation: It can be easily understood by looking at the definition of the threading. The tool post holds the tool or tools meant for the operation to be performed on the work.
2. The lead screw obtains_____ motion from the working spindle.
a) rotary
b) transmitting
c) both rotary and transmitting
d) none of the mentioned
Answer: a
Explanation: The lead screw obtains rotary motion from the working spindle. The lead screw drives the tool post axially against the workpiece to produce a helical groove.
3. The _____ motion is converted into_____ motion of the tool slide
in thread cutting.
a) rotary, feed
b) feed, rotary
c) transmitting, longitudinal
d) none of the mentioned
Answer: a
Explanation: The rotary motion is converted into feed motion. The ledscrew has a trapezoidal thread and obtains this rotary motion which converts into feed motion by split.
4. The split is mounted in the_____ of the carriage.
a) saddle
b) apron
c) top slide
d) cross slide
Answer: b
Explanation: It can be easily seen from the construction of the carriage. The apron is fastened to the saddle and hangs over the front of the bed.
5. In thread cutting, which type of feed motion is possible?
a) engaging
b) disengaging
c) either engaging or disengaging
d) none of the mentioned
Answer: c
Explanation: Both types of feed motion is possible in thread cutting. In order to perform these feed motions split nut’s movement is required.
6. In thread cutting, the _____ feeds should be equal to the pitch of the thread, which is to be cut per revolution of the work piece.
a) cross feed
b) longitudinal feed
c) angular feed
d) none of the mentioned
Answer: b
Explanation: This is the definition of the longitudinal feeds. Again here the feed is the distance the tool advances for each revolution of work.
7. In thread cutting, which of the following receives traversing motion from the lead screw of the lathe?
a) apron
b) top slide
c) cross slide
d) none of the mentioned
Answer: d
Explanation: Saddle receives traversing motion from the lead screw of the lathe, This leadscrew has a definite pitch.
8. In thread cutting, definite ratio is calculated between the_____ feed and rotation of the_____ spindle.
a) longitudinal, headstock
b) cross, headstock
c) cross, tailstock
d) longitudinal, tailstock
Answer: a
Explanation: The definite ratio is calculated between the longitudinal type of feed and the rotation of the headstock spindle. This ratio should be found out so that the relative speeds of rotation of the work and the leadscrew will result in the cutting of a screw of the desired pitch.
9. Which of the following is not true for thread cutting?
a) tool post is driven by lead screw axially against the work piece
b) the lead screw has a trapezoidal thread
c) the relative type of speeds of rotation of the work and the lead screw can result in the cutting of a screw of the desired pitch
d) none of the mentioned
Answer: d
Explanation: All the sentences are true. These all mentioned sentences are the related with the working of the thread cutting which can be carried on a lathe to obtain standard forms and properties of screw threads by using appropriate tools.
10. In thread chasing dial, the half nut is_____ when any live on the dial coincides with a reference live already set.
a) opened
b) closed
c) partially opened and partially closed
d) none of the mentioned
Answer: b
Explanation: At this condition, the half nut is closed to avoid collision. Thread chasing dial is a special attachment used in cutting threads.
11. In thread chasing dial, half nut is closed when any numbered live coincides with reference live for_____ thread.
a) even
b) odd
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: In thread chasing dial, half nut is closed when any numbered live coincides with reference live for odd thread. The dial indicates when to close the split nut.
12. The chasing dial is mounted on the right end of the _____
a) tool post
b) apron
c) head stock
d) none of the mentioned
Answer: b
Explanation: The chasing dial is mounted on the right end of the apron. This chasing dial is generally used to pick up the thread.
13. In chasing dial, dial rotate as long as the half nut is_____
a) engaged
b) not engaged
c) either engaged or not engaged
d) none of the mentioned
Answer: b
Explanation: In chasing dial, dial rotate as long as the half nut is not engaged. Dial stops when the half nut is engaged.
14. An odd thread is one, whose pitch is an exact multiple of the pitch of the lead screw.
a) true
b) false
Answer: b
Explanation: This is false. An even thread is one, whose pitch is an exact multiple of the pitch of the lead screw.
Answer: c
Explanation: Split nut may be open or close depends upon the situations. This is done in order to engage or disengage the feed motion.
This set of Machine Tools and Machining Quiz focuses on “Lathe : Calculation of Change Gears”.
1. In simple gear, the intermediate gear has no effect on the ratio between the driver and the driven.
a) true
b) false
Answer: a
Explanation: This is true. The intermediate gear has no effect on the ratio between the driver and the driven, but merely acts as a connection between the two and serves to keep the rotation of the driver and driven in the same direction.
2. The gear connections on a lathe______
a) always compound
b) always simple
c) may be simple or compound
d) none of the mentioned
Answer: c
Explanation: The gear connection on a lathe may be simple or compound depends upon the requirement. It is versatile.
3. The gear on the stud shaft acts as a _____
a) driver
b) driven
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: The gear on the stud shaft act as a driver. It can be considered as spindle gear as usually it runs at the same spindle speed.
4. Which of the following is also known as Norton gearbox?
a) simple gear train
b) compound gear train
c) quick change type of gearbox
d) none of the mentioned
Answer: c
Explanation: Quick change type of gearbox is also known as Norton gearbox. It covers all the ratio of screw cutting and feed rate likely to be wanted.
5. In Norton gearbox, gear changing is effected by the movement of_____ levers.
a) one
b) two
c) three
d) four
Answer: b
Explanation: Gear changing is affected by the movements of two levers as well as a sliding gear. This eliminates the need to remove and change the gears as in the standard change gearbox.
6. Teeth on driven gear / teeth on driver gear =_______ T.P.I on lead screw=a, T.P.I. on work piece=b.
a) a/b
b) b/a
c) a*b
d) none of the mentioned
Answer: b
Explanation: – This is the suitable ratio for threads where T.P.I on lead screw=a, T.P.I. on work piece=b. If the units of workpiece and leadscrew threads are different, in that case the gears are calculated as follows: 1 inch = 25.4 mm.
7. Driver gear/driven gear =______ pitch of work piece threads=a, pitch of lead screw =b.
a) a/b
b) b/a
c) a*b
d) none of the mentioned
Answer: a
Explanation: It is the suitable ratio. In British it will be equal to *.
8. Lead screw pitch=6mm, work piece pitch=1mm. Find change gears.
a) 6
b) 1/6
c) 3
d) none of the mentioned
Answer: b
Explanation: Change gear=work piece pitch/lead screw pitch. From this formula, we can easily get 1/6 as a answer.
9. Change gear=2, lead screw pitch = 8. Find work piece pitch.
a) 4
b) 16
c) 2
d) none of the mentioned
Answer: b
Explanation: Change gear=work piece pitch/lead screw pitch. So, work piece pitch = change gear*lead screw pitch
= 2*8
= 16
Answer: b
Explanation: The stud carriers two gears. The gear on the stud shaft act as a driver.
This set of Machine Tools and Machining MCQs focuses on “Lathe : Cutting Parameters”.
1. ______ is the speed at which the metal is removed by the tool from the work piece.
a) feed
b) cutting speed
c) depth of cut
d) none of the mentioned
Answer: b
Explanation: It can be easily understood by looking at the definition of the cutting speed. Cutting speed is a peripheral speed of the work.
2. Which of the following represents the formula for cutting speed? cs =cutting speed, D= diameter of work, N= rpm.
a) cs =
b) cs =
c) cs = /N
d) none of the mentioned
Answer: a
Explanation: Cs = – This is the formula for finding the cutting speed.
3. Which of the following represent the unit of cutting speed?
a) meter*minute
b) meter*meter*minute
c) meter / minute
d) none of the mentioned
Answer: c
Explanation: In cutting speed’s formula, d-diameter expressed in meter and n is rpm – revolution per minute. By putting this units in cutting speed’s formula, we can easily obtain its unit as meter/minute.
4. _____ is the distance the tool advances for each revolution of the work.
a) feed
b) depth of cut
c) metal removal rate
d) none of the mentioned
Answer: a
Explanation: The feed of a cutting tool in a lathe work is the distance the tool advances for each revolution of the work. Increased feed reduces the cutting time.
5. Which of the following is the unit of the feed?
a) mm / minute
b) mm / revolution
c) mm * minute
d) none of the mentioned
Answer: b
Explanation: Mm / revolution is the right unit for feed. In British system it is expressed in inches per revolution.
6. The depth of cut is the_____ distance measured from the machined surface to the surface of the work piece, which is uncut.
a) parallel
b) perpendicular
c) at 45 degree
d) none of the mentioned
Answer: b
Explanation: It is the perpendicular distance measured from the machined surface to the surface of the work piece, which is uncut. Other factors remaining constant, the depth of cut varies inversely as the cutting speed.
7. Which of the following represents the formula for the depth of cut? d1=diameter of work surface before machining and d2=diameter of the machined surface
a) d1+d2
b) d1-d2
c) /2
d) /2
Answer: d
Explanation: – this is the formula for depth of cut. Here both d1 and d2 are diameters and expressed in mm.
8. Which of the following represents the formula for metal removal rate?
a=cutting speed, b=depth of cut, c=feed, d=revolution
a) /c
b) /
c) /d
d) none of the mentioned
Answer: c
Explanation: /d – This is the right formula for metal removal rate. Here a is expressed in mm/minute, b is expressed in mm, c is expressed in mm/revolution and d is simply revolution.
9. Which of the following represents the unit of metal removal rate?
a) mm/revolution
b) mm*mm/revolution
c) mm*mm*mm/revolution
d) none of the mentioned
Answer: c
Explanation: Mm*mm*mm / revolution is the right unit for the metal removal rate. If we put the units of cutting speed, depth of cut and feed in formula we can easily get this result.
10. Which of the following represents the unit for machining time?
a) mm / minute
b) minute / revolution
c) minute
d) none of the mentioned
Answer: c
Explanation: Machining time is simply a time so its unit must be matched with time’s unit. Minute is the right unit for machining time.
11. Which of the following represents the formula for the machining time? s=feed of the job per revolution, l=length of the job, n=rpm.
a) l /
b) / l
c) / n
d) none of the mentioned
Answer: a
Explanation: Length of the job / is the right for machining time. Also we can cross check the formula. Put the unit of each quantity and check in which formula we can get unit as a time’s unit.
Answer: a
Explanation: The ratio varies from 10:1. The depth of cut varies inversely as the cutting speed.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Classification of Machine Tools”.
1. Which of the following is included in basic machine tools?
a) lathe machine
b) production milling machine
c) production drilling machine
d) none of the mentioned
Answer: a
Explanation: According to the definition of basic type of machine tools, lathe is basic machine tool while production milling machine and production drilling machines are special purpose drilling machines.
2. Which type of machine tool is used for mass production of essentially small parts?
a) general purpose
b) special purpose
c) automatic screw cutting
d) none of the mentioned
Answer: c
Explanation: The automatic type of screw cutting is used for this purpose. The automatic screw cutting is used because of its high accuracy.
3. Which of the following does all the work of lathe machine?
a) turning centre of CNC type
b) machining centre of CNC type
c) turning centre of CNC type and machining centre of CNC type both
d) none of the mentioned
Answer: a
Explanation: This type of turning centre does most of jobs of lathe. Lathe is a basic machine used for producing cylindrical machine. It is considered as father of machine tool.
4. CNC machining centre does all the work_____
a) milling machine
b) drilling machine
c) both milling and drilling machine
d) none of the mentioned
Answer: c
Explanation: CNC machining centre perform almost all jobs of milling and drilling machines. Drilling machine is used to produce holes and milling machines remove metal as the work is fed against a rotating multipoint cutter.
5. Which of the following is the type of lathe machine?
a) capstan
b) turret
c) both capstan and turret
d) none of the mentioned
Answer: c
Explanation: These both are categorized under the types of lathe machine. Turret and capstan lathe are generally used for the production of duplicate parts
6. The development of machine tools started from the invention of cylinder.
a) true
b) false
Answer: a
Explanation: According to the history of machine tools, Egyptians were the first, who used that. They used the cylinder.
7. DNC stands for_____
a) digital numerical control
b) direct numerical control
c) double numerical control
d) none of the mentioned
Answer: b
Explanation: DNC is the abstract form of direct numerical control.
8. Machine tools are economical for producing large rots.
a) true
b) false
Answer: b
Explanation: This is false. Machine tools are only economical, when it is used for producing small number of pieces.
9. The capacity and the efficiency of the universal machine tools are high.
a) true
b) false
Answer: b
Explanation: This is false. It is comparatively low in case of universal machine tool.
10. Machine tools can be classified as _____
a) geometric shape of the work piece
b) number of the work piece
c) function of the machine
d) all of the mentioned
Answer: d
Explanation: These all are the aspects, which are responsible for the classification. In machine tools, lathe is the most important machine tool followed by drilling machine and shaper machine.
11. Revolver machine tool is an example of special purpose machine tool.
a) true
b) false
Answer: a
Explanation: This is false. Revolver machine tool is an example of production machine tool.
Answer: b
Explanation: This is false. The demand are less in case of NC machine tool.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Taper Shank Twist Drill Machine”.
1. Point consists of a_____ center.
a) dead
b) live
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Point consists of a dead center. Dead center is edge which is sharp situated at the extreme tip of the drill.
2. The cone-shaped end, which does the cutting is the_____
a) shank
b) point
c) tang
d) none of the mentioned
Answer: b
Explanation: As per the definition of point. This part performs the drilling work. Point is the very important for the drilling operation.
3. Which of the following does the point consist?
a) lips
b) cutting edges
c) heel
d) all of the mentioned
Answer: d
Explanation: The point consists of all these things. Cutting edges of drill are known as lips. Heel is a portion of this point back from the cutting edge.
4. Which of the following is the driving end of the drill?
a) tang
b) flute
c) shank
d) land
Answer: c
Explanation: Shank is the driving end of the drill. This shank is clamped in the spindle.
5. Which of the following is the type of shank?
a) taper shank
b) straight shank
c) taper shank and straight shank both
d) none of the mentioned
Answer: c
Explanation: Both taper shank and straight shank are the types of it. Straight shank drill uses a chuck while taper shank uses self holding taps.
6. Taper shank is used for______ diameter drills.
a) small
b) large
c) both large and small
d) none of the mentioned
Answer: b
Explanation: For large diameter, taper shank is used. Self holding taps of this shank fits easily into the drill spindle and can perform the job easily.
7. Body clearance is the part of body which has been reduced.
a) true
b) false
Answer: a
Explanation: Body clearance is a part which is reduced with a purpose to cut down the friction between the drill and the wall of the hole.
8. Flute fits into the slot of the drilling machine.
a) true
b) false
Answer: b
Explanation: This is false. Tang fits into the slot of the drilling machine.
9. Which of the following is not the part of a body?
a) land
b) margin
c) flute
d) none of the mentioned
Answer: d
Explanation: All are parts of body. Land and margin are synonyms. Apart from these, body clearance is also the part of body.
10. ______ are the spiral grooves which run to the length of the drill.
a) tangs
b) flutes
c) shanks
d) none of the mentioned
Answer: b
Explanation: As per the definition of flutes. These flutes curl the chip strongly for the purpose of easier removal.
11. The tang allows the coolant to flow to the cutting edge.
a) true
b) false
Answer: b
Explanation: This is false. The flutes allow this. The flutes also allows the flow of lubricants.
12. The diameter of the drill is measured across the land/margin.
a) true
b) false
Answer: a
Explanation: This is true. The land/margin is the narrow strip which extends to the entire length of the flutes.
Answer: c
Explanation: Both terms can be used for this. The body is generally made of flute, margin and body clearance.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Table Top Drilling Machine”.
1. Table top drilling machine can be categorized as_______
a) general purpose drilling machine
b) specific purpose drilling machine
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Table top drilling machine can be categorized as general purpose drilling machine as it is not used for any specific application.
2. Which type of feed can be given in table top drilling machine?
a) manual
b) power
c) both manual and power feed
d) none of the mentioned
Answer: a
Explanation: Manual feed is given in this machine. We don’t deal with very heavy jobs in table top drilling machine so manual feed can perform job sufficiently.
3. Power produced by table top drilling machine is comparatively low.
a) true
b) false
Answer: a
Explanation: This is true. Power produced is comparatively low because manual feed is given to this machine, not powered feed.
4. In table top drilling machine, feed can be operated by_____
a) gear mechanism
b) lever
c) spindle
d) none of the mentioned
Answer: b
Explanation: The feed can be operated by lever in this machine. This lever can be operated manually to provide feed.
5. Generally, table top drilling machine can produce diameters up to______
a) 1 mm
b) 10 mm
c) 100 mm
d) none of the mentioned
Answer: b
Explanation: It can produce diameter up to 10 mm. As it is operated by manual feed, its power production is low so it is not used for producing large diameters.
6. Table top drilling machine can be mounted on the table.
a) true
b) false
Answer: a
Explanation: It can be mounted or clamped on the table to accommodate with job.
7. Table top drilling machine is generally______ in terms of height.
a) small
b) big
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Table tap drilling machine is comparatively small in terms of height. It is hardly 1 to 3 feet long in height.
8. In table top drilling machine, belt-pulley system operates______
a) lever
b) spindle
c) both lever and spindle
d) none of the mentioned
Answer: b
Explanation: Spindle is operated by this belt-pulley system. Lever can be operated manually for feed.
9. Drill is mounted on lever in table top drilling machine.
a) true
b) false
Answer: b
Explanation: This is false. Drill is mounted on spindle in table top drilling machine.
Answer: b
Explanation: All mentioned are true accept the sentence which says that it is usede for mass production. It cannot be used for mass production. It is very small and used only for small job work.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Pillar Drilling Machine”.
1. Distance between the table and drill is_____ in pillar drill machine as compare to table top drill machine.
a) small
b) high
c) same
d) none of the mentioned
Answer: b
Explanation: The distance between the table and drill is more in pillar drill machine. Pillar drill uses a column and base along with drill making a sturdy as well as safe place to drill materials like wood and so on.
2. Which of the following is not true for pillar drill machine?
a) it is an extension of table top drill machine
b) it is very strong
c) it is not rigid
d) none of the mentioned
Answer: b
Explanation: All mentioned sentences are true except one which says that it is very strong. This type of machine is not very tough or strong.
3. Which type of motion is possible for table in pillar drill machine?
a) only swivel
b) only upward and downward
c) all swivel, upward and downward
d) none of the mentioned
Answer: c
Explanation: These all motions of table is possible in pillar drill machine in order to accommodate with job.
4. The pillar drill machine can perform maximum______ mm of diameter job.
a) 10
b) 100
c) 20
d) 200
Answer: c
Explanation: Generally, this machine cannot perform more than 20 mm diameter job. It is used for job below 20 mm diameter.
5. Pillar drill machine has a small tubular column.
a) true
b) false
Answer: b
Explanation: This is false. This machine has a long tubular column.
6. In pillar drill machine, there may be chances of vibration.
a) true
b) false
Answer: a
Explanation: In this machine chances of vibrations are there as the column job is not very rigid.
7. What is the maximum power that we can expect in pillar drill machine?
a) 0.5 Kw
b) 1.1 Kw
c) 5.5 Kw
d) 11.1 Kw
Answer: b
Explanation: As per the design, mechanism and performance, maximum 1.1 Kw power can be expected.
8. The pillar drill machine can perform______ work.
a) light
b) heavy
c) both light and heavy
d) none of the mentioned
Answer: a
Explanation: This machine is ordinary machine, not made for specific purpose or special task and generally used only for light work.
9. Which of the following is true for pillar drill machine?
a) it is taller
b) it can be mounted or fitted on ground or any other foundation
c) for the production of one or two pieces of light work, this can be used
d) all of the mentioned
Answer: d
Explanation: All sentences are taller. It is taller looks like a pillar that’s why this machine is known as pillar machine. It can be fixed on any base and only used for producing light work.
Answer: d
Explanation: All the sentences are true. As the name pillar machine itself suggests that it looks like pillar. Its table can move in order to accommodate with the job requirements. Its ordinary machine, not used for mass production.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Column Drilling Machine”.
1. Which type of work can be performed in column drill machine?
a) different job of material
b) different diameter of drill
c) different depth of drill
d) all of the mentioned
Answer: d
Explanation: These all can be performed in column drill machine. That’s why it is commonly used in all industry. Its common machine and can’t used for heavy application.
2. Which of the following is not true for column drill machine?
a) it is very light
b) it is quite big in size
c) different types of works can be done in this machine
d) none of the mentioned
Answer: a
Explanation: All sentences are true except the one which says that it is very light. In fact, it is very rigid and ragged machine
3. The production rate of the column drill machine is high.
a) true
b) false
Answer: b
Explanation: This is false. Its production rate is comparatively low but it can perform the operation quite nicely and often used in industry.
4. Which of the following is not true for column drill machine?
a) it is strong machine structure
b) it is very powerful machine
c) it doesn’t allow high speed drilling
d) none of the mentioned
Answer: c
Explanation: All the sentences are true except the one which says that it doesn’t allow high speed drilling. This machine allows high speed drilling.
5. Which of the following is not true for column drill machine?
a) accuracy is less
b) it is common type of drill machine used in industry
c) it is very rigid
d) none of the mentioned
Answer: a
Explanation: All the sentences are true except the one which says that accuracy is less in column drill machine. Accuracy is comparatively high in this type of machine.
6. Which type of gear box does column drill machine possess?
a) speed gear box
b) feed gear box
c) both speed gear box and feed gear box
d) none of the mentioned
Answer: c
Explanation: Both type of gear boxes are there in this machine. Now a days column drill machine are also available with hydraulic feed and multi spindle head.
7. The speed gear box and feed gear box are confined with the drilling head.
a) true
b) false
Answer: a
Explanation: It can be easily seen from the construction of this machine. Drilling head is a heavy and most important part of the drilling machine where lever and other components are attached.
8. Column drill machine can be used for mass production.
a) true
b) false
Answer: b
Explanation: This is false. It can’t be used for mass production. It can be only used for small production as it is very rigid and intended only for some specific purposes. The rate at which produce the output is quite low.
9. To enable the spindle speed, one can vary_____
a) speed of spindle
b) feed
c) both speed of spindle and feed
d) none of the mentioned
Answer: c
Explanation: We van vary speed of spindle and feed to enable the spindle speed. This spindle speed is also termed as feed rate or peripheral speed.
10. Column drill machine can perform large diameter drills.
a) true
b) false
Answer: a
Explanation: It is the application of this machine. This machine can perform high speed drilling with multi spindle head.
11. In which of the following machine, automatic feed is possible?
a) table top drill
b) column drill
c) pillar drill
d) all of the mentioned
Answer: b
Explanation: In table top and pillar drill, only manual feed is possible but in case of column drill machine, automatic feed is possible.
Answer: b
Explanation: This is false. Very odd and heavy types of jobs can be mounted easily machined in column drill.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Radial Drilling Machine”.
1. The rigidness of radial drill machine is______ column drill machine.
a) less than
b) same as
c) more than
d) none of the mentioned
Answer: c
Explanation: Radial drills can make large diameter of holes so its rigidness should be more column drill machine.
2. Thickness of valve in the radial machine is _____
a) small
b) large
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Valve thickness is quite large in this machine as it has to drill large diameter of holes.
3. There is a radial arm on the tubular column in radial drill machine.
a) true
b) false
Answer: a
Explanation: As per the construction of this machine. On this radial arm, the spindle head is mounted.
4. Which type of movement is possible in case of radial arm?
a) only swivel
b) only up and down
c) all up, down and swivel
d) none of the mentioned
Answer: b
Explanation: Only up and down movement is possible in this case. Generally, horizontal movement is not possible in radial arm.
5. The movement of radial arm is______
a) manual
b) powered
c) either manual or powered
d) none of the mentioned
Answer: c
Explanation: Both movements are possible. But at the time when we have to deal with heavy and large workpieces the powered movement is more preferable.
6. Which of the following holds the drill spindle?
a) radial arm
b) tubular column
c) drilling head
d) none of the mentioned
Answer: c
Explanation: Drilling head holds the drill spindle. There is a motor which is mounted on the spindle head rotates this spindle.
7. The drilling head can move_______
a) inward and outward
b) up and down
c) all inward and outward and up and down
d) none of the mentioned
Answer: c
Explanation: These all types of motions are possible in this case. The drilling head is mounted on the radial arm.
8. Which of the following is not true for radial drill?
a) it can work with jobs, which are odd shaped
b) the tubular column is very thick and has small diameters
c) drill is mounted on drilling spindle
d) none of the mentioned
Answer: b
Explanation: The tubular is thick but it has large diameter not small.
9. Which of the following is true for radial drill machine?
a) drilling spindle is subjected to rotation
b) the entire drilling head is mounted on radial arm
c) the gap between the drill and job is known as stroke length
d) all of the mentioned
Answer: d
Explanation: All sentences are true. There is a one thing that we should know about radial drilling machine is that we can make multiple holes in one setting of work. This is the advantage of the radial drilling machine.
10. The radial arm can be rotated about the tubular column.
a) true
b) false
Answer: a
Explanation: This is the property of radial arm. This arm can be lifted or lowered according to the requirements.
Answer: d
Explanation: These all types of spindle are possible. The rotation of spindle is done by the motor mounted on the spindle head.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Hand Drilling and Gang Drilling”.
1. Which of the following machine is portable?
a) hand drill
b) none of mentioned
c) pillar drill
d) column drill
Answer: a
Explanation: Pillar drill and column drill are heavy enough to carry. Hand drill can be driven by hand.
2. Size of hand drill is relatively ______
a) small
b) medium
c) large
d) very large
Answer: a
Explanation: Size of hand drill is relatively small. It is so small that man can hold it in his hand.
3. In hand drill, force on the spindle is_____
a) less
b) more
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Generally, force on the spindle is less in this machine as this machine has to be carried by hand-manually. So smaller the force, more easier it to carry in hand.
4. In hand drill, spindle is rotated by aerator system.
a) true
b) false
Answer: a
Explanation: Hand drill is such a small that it can be hold by hand and for that it should be flexible for normal use. For that, generally we provide aerator system for the rotation of the spindle.
5. If you want to make a hole in a switch board, then you will use______
a) table top drill machine
b) pillar drill machine
c) hand drill machine
d) column drill machine
Answer: c
Explanation: Hand drill machine is used for this purpose because it is portable. We can’t move switch board to the machine. Switch board is fixed. So, in order to perform drilling operation in switch board we need a portable device and for that purpose we use hand dril.
6. In which of the following drill machine, number of drills are used simultaneously?
a) table top drill machine
b) pillar drill machine
c) hand drill machine
d) gang drill machine
Answer: d
Explanation: Gang drill is used for this purpose. As the name suggest, gang drill is used for gang production means for large production and for that it uses number of drills simultaneously.
7. Which type of drilling can be done in gang drill machine?
a) progressive
b) parallel
c) both progressive and parallel
d) none of the mentioned
Answer: c
Explanation: Both types of drills can be performed in this machine as number of drills can be used simultaneously.
8. Use of a jig is necessary in gang drill.
a) true
b) false
Answer: a
Explanation: Jig is always needed. Jig provides the replica of actual task.
9. Gang drill is used for______
a) large-batch production
b) small production
c) relatively low production
d) none of the mentioned
Answer: a
Explanation: It is used for large productions because it can produce large number of holes simultaneously.
Answer: d
Explanation: Accuracy is higher in gang drill. We use separate jig for each and every job in gang drill.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Turret Type Drilling Machine”.
1. Which of the following has higher production rate?
a) table top drill
b) gang drill
c) column drill
d) turret drill
Answer: d
Explanation: Turret drill has higher production rate compare to others. This turret word is derived from Italian word torretta which means a tower.
2. Turret drill generally has ______ axis.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Turret drill generally has vertical axis. It has it axis along with y axis.
3. In turret drill, drills are mounted in holes.
a) true
b) false
Answer: a
Explanation: It can be easily seen from the construction of this machine. The drills are mounted in holes while the table is used for the fixing of jobs.
4. In turret drill, which of the following is mounted in holes?
a) boring tool
b) ream cutter
c) countersinking tool
d) all of the mentioned
Answer: d
Explanation: All can be mounted in holes. Turret drill is a versatile tool. It can enlarge the drill and perform number of operations. For that purpose, all mentioned types of tools can be mounted in holes.
5. A job is mounted______ in turret drill.
a) on table
b) in holes
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: A job is mounted on table in turret drill. At the same time, tools are mounted in holes.
6. In turret drill, table can move______
a) in x direction
b) in y direction
c) either in x direction or in y direction
d) none of the mentioned
Answer: c
Explanation: The table can move either in x direction or in y direction in order to accommodate with work.
7. The entire turret can move horizontally inward and outward along with drill.
a) true
b) false
Answer: b
Explanation: This is false. The entire turret can move vertically up and down along with drill.
8. Which type of operation is possible in turret drill?
a) secondary enlargement
b) thrust enlargement
c) both secondary enlargement and thrust enlargement
d) none of the mentioned
Answer: c
Explanation: Both operations are possible in turret drill. Thrust is a reaction force explained by newton in its second and third law.
9. In turret drill, table moment can be_______
a) mechanical
b) hydraulic
c) electrohydraulic
d) all of the mentioned
Answer: d
Explanation: All type of moment can be possible in turret drill. This make this drill more efficient to perform the desired job.
Answer: a
Explanation: Though drills are developed especially for making holes but today these drill machines become a versatile tool which perform various types of operations. These all operations are possible in this machine.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Multi Spindle Drilling Machine”.
1. Multi spindle drilling machine is used for lot production.
a) true
b) false
Answer: a
Explanation: Multi spindle drilling is used to make drill in a huge number at a time-simultaneously. So this machine can be used for lot production.
2. Multi spindle drilling machine can be categorized as_______
a) general purpose drilling machine
b) special purpose drilling machine
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: It is a special purpose drilling machine. It is not used for general purpose. It is used when we need to make a lot of holes simultaneously of different shape and different depth and again in mass production.
3. Multi spindle drilling machines can have spindles up to 10 to 12.
a) true
b) false
Answer: a
Explanation: As per the construction of this machine. Due to large number of spindles, it can makes a lot of holes simultaneously.
4. Which of the following is true for multi spindle drill machine?
a) it can’t make number of holes at different location and of different size
b) it is able to make number of holes at different location and of different size
c) it can’t make number of holes at different location , but can make holes of different size
d) it can make number of holes at different location , but can not make holes of different size
Answer: b
Explanation: This machine can make number of holes at different location and also of different sizes. This reduces the time of operations and also increases the accuracy.
5. Multi spindle drill machines can produce holes of different______
a) shapes
b) depth
c) both shapes and depth
d) none of the mentioned
Answer: c
Explanation: It can produce variety of holes of different sizes and shapes. There are number of spindles which can perform simultaneously.
6. In multi spindle drill, for each type of job separate jig should be used.
a) true
b) false
Answer: a
Explanation: Jig should be resembles with the job. This is the necessary condition for multi spindle drill and for that reason separate jig is used for each type job.
7. Which of the following is the part of multi spindle drill machine?
a) motor
b) central gear
c) planetary gear
d) all of the mentioned
Answer: d
Explanation: All mentioned are the parts of this machine. Apart from this, for the purpose of mass production, adjustable center type design and number of other parts are also provided.
8. In multi spindle drill,the circular angular rotation, position and location of the spindle can’t be changed.
a) true
b) false
Answer: b
Explanation: In multi spindle drill machine, circular angular rotation, position and location of the spindle can be varied.
9. In multi spindle drill, the drills are used at______
a) same height
b) different height
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: The drills are used at different height in this machine to make drill of different depth and at different place.
Answer: a
Explanation: The movement of entire head is little difficult and not economical in this machine, because the size of the head is comparatively big.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Micro-Mini Drilling Machine”.
1. Micro drill machine is also known as mini drill machine.
a) true
b) false
Answer: a
Explanation: As per the definition of micro drill machine. As the name suggest micro drill makes very small holes so it is also known as mini drill machine.
2. Micro drill machine means it has height in terms of micrometer.
a) true
b) false
Answer: b
Explanation: It doesn’t have height in terms of micrometers. It is very small that’s why it is termed as micro drill machine.
3. The base of the micro drill is______
a) light
b) heavy
c) very light
d) none of the mentioned
Answer: b
Explanation: The base is generally heavy in this case. To make hole, drill needs a huge downward pressure. To sustain this pressure, base should be heavy.
4. The base of the table is_____ in micro drill machine.
a) free
b) fixed
c) either free or fixed
d) none of the mentioned
Answer: c
Explanation: The base can be either free or fixed base on the job. But it should be strong to withstand high pressure.
5. Which type of motion is possible for drilling head?
a) up
b) down
c) up and down
d) none of the mentioned
Answer: c
Explanation: Drilling head can be moved up and down in order to accommodate with the job.
6. Feed motion can be controlled automatically.
a) true
b) false
Answer: a
Explanation: As per the working of this machine. We don’t need manual support for the control of feed motion. The feed of a drill is the distance the drill moves into work at each revolution of the spindle.
7. If the speed of the drill increases, then the thrust force will______
a) increase
b) decrease
c) remain same
d) none of the mentioned
Answer: b
Explanation: If the speed of the drill increases, then the thrust force will decrease. Here the thrust force is the reaction force explained by newton’s second and third laws.
8. If the speed of the drill decreases, then the torque will______
a) increase
b) decrease
c) remain same
d) none of the mentioned
Answer: a
Explanation: If the speed of the drill decreases, then the torque will increase as the thrust force increases with the decrement in the speed of drill.
9. Which type of work can be done in micro drill machine?
a) fine work
b) electrical work
c) electro-fitting work
d) all of the mentioned
Answer: d
Explanation: All mentioned types of work can be done in micro drill machine. This the application of micro drill machine. In fine work, electrical work, elctro-fitting work we need small holes and for that purpose this machine is used.
Answer: a
Explanation: It is similar with table top machine and just small in size then the table top drill machine. So if we compare these machine on the basis of look, we can easily say that micro drill machine looks like a table top drill machine.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Deep Hole Drilling”.
1. Which of following is necessary for deep hole?
a) l/d ratio should be high
b) l/d ratio should be less
c) l/d ratio should be same
d) none of the mentioned
Answer: a
Explanation: L/d ratio should be very high for deep hole. Here l=length of the tool and d means diameter of the tool. If l/d ratio is high that means tool has large length compare to its diameter and then and then only it can make deep holes.
2. Where we need the deep hole?
a) barrel of guns
b) both barrel of guns and oil holes in crank shaft
c) oil holes in crank shaft
d) none of the mentioned
Answer: dc
Explanation: We need the deep hole in all these application. Crank shaft is a machine responsible for conversion between reciprocating motion and rotary motion.
3. Which of the following problem we face with deep hole?
a) drill breakage
b) poor cutting fluid action
c) chip clogging
d) all of the mentioned
Answer: d
Explanation: These all problems we face with deep hole. There are some chances that cutting fluid can not able to reach at the bottom at the drill, at that time chip can be clogged to the flute. This is chip clogging.
4. In deep hole drill, there should be small helix angle.
a) true
b) false
Answer: b
Explanation: This is wrong. In deep hole, there should be large helix angle.
5. Deep hole drilling machines are normally______
a) vertical
b) horizontal
c) 45 degree inclined to both horizontal and vertical axis
d) none of the mentioned
Answer: b
Explanation: Deep hole drilling machines are normally horizontal. These machines have horizontal axis.
6. In deep hole drill, high speed spindle________
a) reduce the cutting force
b) increase the cutting force
c) doesn’t affect the cutting force
d) none of the mentioned
Answer: a
Explanation: High speed spindle reduces the cutting force. If the spindle move with fast speed, we need less cutting force.
7. Deep hole drill machines have high rigidity.
a) true
b) false
Answer: a
Explanation: This is true. It has high rigidity so that there will be no chance of vibration.
8. In deep hole drill machine, the tool is_____
a) long
b) slender
c) long and slender
d) none of the mentioned
Answer: c
Explanation: The tool is very slender and long in deep hole machine as this machine has to make deep hole so it is necessary that the tool should be long as well as slender.
9. The lateral movement is prevented with the help of tool guide in deep hole drill.
a) true
b) false
Answer: a
Explanation: The lateral movement is prevented with the help of tool guide in deep hole drill with a purpose of better performance as it can affect adversely. .
Answer: a
Explanation: It is converted in cnc control machine to obtain high accuracy.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Sensitive Bench Drilling Machine”.
1. Sensitive bench drilling machine is quite large in size.
a) true
b) false
Answer: b
Explanation: This is false. Sensitive bench drilling machine is small in size.
2. Sensitive bench drilling machine is used for____
a) heavy work
b) light work
c) both heavy and light work
d) none of the mentioned
Answer: b
Explanation: It is used only for light work as it is not a big machine. It is comparatively small machine.
3. Sensitive bench drilling machine is capable of drilling holes up to ______ mm diameter.
a) 1.25
b) 12.5
c) 2.5
d) 25
Answer: b
Explanation: It can drill up to 12.5 mm diameter as it is only used for small work, not for heavy work.
4. For normal drilling, the work surface of sensitive bench drilling machine is kept vertical.
a) true
b) false
Answer: b
Explanation: This is false. For normal drilling, the work surface is kept horizontal.
5. Sensitive type of drilling machine is the simplest type of drilling machine.
a) true
b) false
Answer: a
Explanation: It is the simplest type of drilling machine as it is very small and again used for only light work.
6. Which of the following is the part of sensitive bench drilling machine?
a) driving motor
b) cone pulley
c) sleeve
d) all of the mentioned
Answer: d
Explanation: All are the parts of this machine. Apart from these, chuck, spindle lock, deep gauge and stop, belt guard etc. are also the part of this machine.
7. The base of the sensitive bench drilling machine is____
a) free
b) mounted on a bench
c) rotary
d) none of the mentioned
Answer: b
Explanation: The base is mounted on a bench. Its not free and again it doesn’t have any rotary motion.
8. Machine spindle possesses tapered hole in sensitive bench drilling machine.
a) true
b) false
Answer: a
Explanation: As per the construction of this machine. Tapered hole means a hole which is thinner towards one end compare to other end.
9. In sensitive bench drilling machine, the drills are fitted in ____
a) chuck
b) spindle
c) either in chuck or in spindle
d) none of the mentioned
Answer: c
Explanation: The drills are fitted in chucks or in the spindle. There are various types of chuck like two jaw chuck, three jaw chuck, four jaw chuck etc.
10. If the holes are to be drilled at an angle, the table can be titled.
a) true
b) false
Answer: a
Explanation: It can be seen from the construction of this machine. If we want to make hole at any angle, the table can be titled to obtain proper position and that’s the reason this machine can make holes at various angles.
Answer: d
Explanation: Nothing is wrong. All are right. Some space is the between the work table and base, various type of spindle speed can also be achieved and again we can also change the position of the belt in stepped pulley.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Operation on Drilling Machine”.
1. Which of the following operation, we can’t perform on drilling machine?
a) reaming
b) tapping
c) lapping
d) none of the mentioned
Answer: d
Explanation: Although drilling is primarily intended for drill but now it becomes a versatile tool. It can perform various operations including reaming, tapping, lapping and so on.
2. Tapping attachment is included in_______ method of tool holding devices.
a) by chucks
b) by a sleeve
c) by directly fitting in the spindle
d) none of the mentioned
Answer: d
Explanation: It is included in special attachment method. In tapping, one end is always thinner than other end.
3. Floating holder is included in______ method of tool holding devices.
a) by directly fitting in the spindle
b) by special attachments
c) by a socket
d) none of the mentioned
Answer: b
Explanation: It is included in special attachment. Floating holder is a type of holder that permits certain amount freedom to enable the tool with a purpose of maintaining a proper path relative to the work.
4. Which of the following method is not used for holding tool?
a) by a sleeve
b) by chucks
c) by a socket
d) none of the mentioned
Answer: d
Explanation: These all methods are used for holding tools. There are various types of chucks 2 jaw chuck, three jaw chuck etc. Sleeve and socket are also used for this purpose.
5. We can’t perform grinding operation in a drilling machine.
a) true
b) false
Answer: b
Explanation: This is false. Now, drill machine becomes a versatile tool. We can perform grinding operation.
6. Which of the following device is not used for holding the work in a drilling machine?
a) step block
b) drill jigs
c) both step block and drill jigs
d) none of the mentioned
Answer: d
Explanation: Both are used for holding the work in drilling machine.
7. In drilling operation, work should be held by hand.
a) true
b) false
Answer: b
Explanation: Work shouldn’t be held by hand as it may causes injuries to the operator.
8. The drilling machine is the second most important machine tool in a workshop.
a) true
b) false
Answer: a
Explanation: Lathe is the most important machine tool followed ny drill and shaper.
9. The drilling machine was primarily designed to originate a _____
a) flat surface
b) cylindrical surface
c) taper surface
d) none of the mentioned
Answer: d
Explanation: It was primarily designed to originate a hole but now it can perform variety of operations.
Answer: b
Explanation: It rotates with downward pressure if the job is below the machine on the earth.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Classification of Drilling Machine : According to Material”
1. According to material, drill can be classified as_____
a) hss
b) carbides
c) bot hss and carbides
d) none of the mentioned
Answer: c
Explanation: Both hss and carbides are classified according to material. In carbides, generally cemented carbide is mostly used.
2. HSS stands for high speed steel.
a) true
b) false
Answer: a
Explanation: HSS is the acronym form of high speed steel. It is commonly used in tool bits and cutting tools.
3. HSS was introduced in______
a) 1895
b) 1905
c) 1915
d) none of the mentioned
Answer: c
Explanation: It was introduced in 1915. It was introduced in U.S.A.
4. HSS was introduced by F.W. Taylor.
a) true
b) false
Answer: a
Explanation: F.W. Taylor introduced the HSS. Full name of F.M. Taylor is Frederick Winslow Taylor.
5. Which of the following element is included in HSS?
a) tungsten
b) chromium
c) both tungsten and chromium
d) none of the mentioned
Answer: c
Explanation: Both are included in HSS. Apart from tungsten and chromium, carbon and manganese are also included in HSS.
6. How much chromium is there in HSS?
a) 4
b) 14
c) 8
d) 18
Answer: a
Explanation: As per the structure of HSS. In the starting mn was used but because of its some drawbacks cr took its place and today it is used.
7. How much tungsten is there in HSS?
a) 4
b) 14
c) 8
d) 18
Answer: d
Explanation: About 18% tungsten is there in HSS. HSS gain its most of property from tungsten and molybdenum.
8. Which of the following quality does HSS has?
a) toughness
b) formability
c) tensile strength
d) all of the mentioned
Answer: d
Explanation: These all are the qualities of HSS. This is used in milling cutters, taps, gear cutters etc.
9. Which of the following drill is produced power metallurgically?
a) hss
b) cemented carbides
c) diamond
d) none of the mentioned
Answer: b
Explanation: As per the construction of cemented carbides. Powder metallurgy is a process in which components are made from metal powder.
10. Carbides are always coated tools.
a) true
b) false
Answer: b
Explanation: This is false. It can be coated or uncoated. It is not mandatory that it must be coated.
11. Diamond is used for making very small holes in exotic materials.
a) true
b) false
Answer: a
Explanation: It is the property of diamond. Though diamond is the hardest substance it can easily make holes in exotic materials.
Answer: a
Explanation: This is true. If they are used for this purpose, then diamond will be graphitized.
This set of Machine Tools and Machining online test focuses on “Classification of Drilling Machine : According to Size ”.
1. According to size, drill can be classified as______
a) micro drill
b) moderate drill
c) large drill
d) all of the mentioned
Answer: d
Explanation: Micro drill, moderate drill and large drill are the types of drill according to size. Generally, this size is expressed in micron or in mm.
2. When the size of the drill is around 25 to 500 micron,________ is used.
a) micro drill
b) moderate drill
c) large drill
d) none of the mentioned
Answer: a
Explanation: Micro drill has a size from 25 to 500 micron as per classification.
3. When the size of the drill is around 3 to 25 mm,________ is used.
a) micro drill
b) moderate drill
c) large drill
d) none of the mentioned
Answer: b
Explanation: Moderate drill has a size of 3 to 25 mm as per the classification.
4. When the size of the drill is around 25 to 40 mm,________ is used.
a) micro drill
b) moderate drill
c) large drill
d) none of the mentioned
Answer: c
Explanation: Generally, the large drill drill has a size from 25 to 40 mm as per classification.
5. Which of the following drill is most widely used?
a) micro drill
b) moderate drill
c) large drill
d) none of the mentioned
Answer: b
Explanation: Moderate type of drill is most widely used as it has medium size of drill- not too large and not too short.
6. 1 mm = ______ micron.
a) 10
b) 100
c) 1000
d) none of the mentioned
Answer: c
Explanation: It is the simple mathematical conversion. 1 mm = 1000 micron and 1 micron = 0.001 mm.
7. For large drills, large force should be applied.
a) true
b) false
Answer: a
Explanation: Large drills need large force as it has large l/d ratio.
8. In industry, which type of drill is most useful?
a) micro drill
b) moderate drill
c) large drill
d) none of the mentioned
Answer: b
Explanation: In industry, moderate type of drill is most widely used as it has medium size of drill and again it doesn’t need large force like large drill.
9. For large drill, how much torque is needed?
a) small
b) moderate
c) large
d) none of the mentioned
Answer: c
Explanation: For large drill large force is needed. As torque=force*displacement so torque is directly proportional to the force. So we need large torque for large drill.
10. For large drill, firstly hole is made by drill and then it is enlarged by boring operation.
a) true
b) false
Answer: a
Explanation: It is the working procedure for making large drill. Drill just make the hole. Boring is specially used for enlarging the drill that has already made by drill.
11. Large drill is a mass production machine.
a) true
b) false
Answer: b
Explanation: It is used only for specific purpose as it needs very large force and torque.
Answer: b
Explanation: Moderate drill can be used for mass production as it has medium size of drill and it don’t need too large force like large drill.
This set of Machine Tools and Machining online quiz focuses on “Classification of Drilling Machine : According to Number of Flutes”.
1. The flutes are provided for removal of chips.
a) true
b) false
Answer: a
Explanation: It is the property of it. There is a sharp blade which is there along with edge of the flute known as teeth.
2. Which of the following is most commonly used?
a) single flute drill
b) two flute drill
c) three or four flute drill
d) none of the mentioned
Answer: b
Explanation: Two flute drill is commonly used because it is very versatile and has wide applications.
3. Which of the following is rarely used?
a) single flute drill
b) two flute drill
c) three or four flute drill
d) none of the mentioned
Answer: a
Explanation: Single flute drill is rarely used as it has very limited applications.
4. Single flute drill is ______
a) very light
b) very rigid
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: It is very rigid that’s the reason why it has very small applications.
5. Which of the following is the example of single flute drill?
a) deep hole drill
b) crank shaft hole drill
c) both deep hole drill and crank shaft hole drill
d) none of the mentioned
Answer: c
Explanation: Both are examples of single flute drill. Deep hole drilling is used with large length and comparatively small diameter of drill. Crank shaft hole drill has also wide applications.
6. Which of the following is also known as slot drill?
a) single flute drill
b) two flute drill
c) three or four flute drill
d) none of the mentioned
Answer: c
Explanation: Generally 3 or 4 flute drill is also known as slot drill. Slot drill is a double cutting drill with flat end. It has two radial cutting edges.
7. Gun drill is the example of______
a) single flute drill
b) two flute drill
c) three or four flute drill
d) none of the mentioned
Answer: a
Explanation: It can be easily understood from the classification. Gun drill is a fluted drill. These are used deep drilling.
8. Sometimes soft drills are used to reduce the load path tooth.
a) true
b) false
Answer: a
Explanation: It is the application of soft drill. It is not used for heavy purpose. It is used mostly to reduce the load path tooth.
9. Slot drills are used for making holes with flat ends.
a) true
b) false
Answer: a
Explanation: It is the application of slot drill. It consists of two radial edges.
Answer: a
Explanation: This is the property of flute.The flute allows us to remove material from the metal.
This set of Machine Tools and Machining question bank focuses on “Classification of Drilling Machine : According to the Helix Angle of the Flutes”.
1. Helix angle also governs the rack angle.
a) true
b) false
Answer: a
Explanation: This is true. The angle between the helix and axial line on the right is known as helix angel.
2. For cutting ductile material with a long chip, ______ helixangle is necessary.
a) small
b) moderate
c) long
d) none of the mentioned
Answer: c
Explanation: Long helix angle is used for cutting ductile materials with a long chip.
3. Large helix angle ensures the _______ in cutting force.
a) increment
b) reduction
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: It is the property of it. Helix angles are used in power transfer and in motion conversation in mechanical engineering.
4. For spade drill, ______ helix angle is used.
a) small
b) large
c) zero
d) none of the mentioned
Answer: c
Explanation: Zero helix angle is used for this purpose.Spade drill is a two fluted drill. The external flute provide efficient chip removal.
5. For hard materials, ______ helix angle is used.
a) small
b) large
c) zero
d) none of the mentioned
Answer: a
Explanation: Small helix angle is used for this purpose. In screws, helical gears and warm gears, we uses this helix angle.
6. For micro drill, ______ helix angle is used.
a) small
b) large
c) zero
d) none of the mentioned
Answer: c
Explanation: Zero helix angel is used for this purpose. Helix angel is like a angel between tangent to a helix and an axial line on the right.
7. Which helix angle is used for deep hole drilling?
a) small
b) large
c) zero
d) none of the mentioned
Answer: b
Explanation: Large helix angel is used for this purpose. Zero helix angel are used for small drilling.
8. Which helix angle is used for making holes in very soft materials?
a) small
b) large
c) zero
d) none of the mentioned
Answer: b
Explanation: Large helix angel is used for this purpose as it can make make deep holes easily without any extra effort.
9. According to the helix angel of the flutes, drill can be classified as_____
a) small helix
b) large helix
c) zero helix
d) all of the mentioned
Answer: d
Explanation: Drill can be classified in number of ways. based on helix angel, based on number of flutes, based on materials, based on size on so on. Based on helix angel, it can be classified as small helix, large helix and zero helix.
10. If we increase the helix angle, strength of drill will______
a) increase
b) decrease
c) not affected
d) none of the mentioned
Answer: b
Explanation: There is an inverse relationship between helix angel and strength of drill. If we increase the helix angel, strength of drill will decrease and vice versa.
11.Chip disposal will be better If we _______ the helix angle.
a) increase
b) decrease
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: It is the property of helix angel and if we decrease the helix angel it will affect chip disposal rate in a negative way.
12. What is the range of the usual helix angle?
a) 10 to 25
b) 20 to 35
c) 45 to 60
d)none of the mentioned
Answer: b
Explanation: 20 to 35-This is the usual range for usual helix angel.
13. What is the range of the large helix angle?
a) 10 to 25
b) 20 to 35
c) 45 to 60
d) none of the mentioned
Answer: c
Explanation: 45 to 60-This is the usual range for usual helix angel.
Answer: a
Explanation: There is a direct relationship between helix angel and rack angel. If we increase the helix angel, rack angel will also increase and vice versa.
This set of Machine Tools and Machining Questions & Answers for entrance exams focuses on “Classification of Drilling Machine : According to Length to Diameter Ratio and Shank Type”.
1. If l/d ratio is too large, then drill becomes_______
a) weak
b) strong
c) very sharp
d) none of the mentioned
Answer: a
Explanation: The large l/d ratio weaken the drill. If we have very long drill with small diameter then it can’t perform drilling operation more accurately.
2. If l/d ratio is too short, then chip removal will be difficult.
a) true
b) false
Answer: a
Explanation: Chip removal will be difficult if this ratio is too short. Short l/d ratio weakens the drilling and reduce the performance. So the chip removal will be difficult.
3. Long drills are used for deep holes.
a) true
b) false
Answer: a
Explanation: As per the definition of long drill. Long drills has high l/d ration. So it can make high deeply holes.
4. For general purpose, l/d ratio should be_____
a) 5 to 10
b) 10 to 20
c) more than 20
d) none of the mentioned
Answer: a
Explanation: For general purpose, the ratio should be 5 to 10. The drills containing these ratio generally used in ordinary performances.
5. Which of the following can also be termed as center drill?
a) general drill
b) short drill
c) long drill
d) none of the mentioned
Answer: b
Explanation: Short drill can also be termed as centerr drill.
6. For long drills, l/d ratio should be more then 25.
a) true
b) false
Answer: a
Explanation: For long drills, this ratio should be more than 25. For general purpose it should have ratio of 5 to 10.
7. For small drill, l/d ratio should be 8 to 10.
a) true
b) false
Answer: b
Explanation: This is false. For small drill, l/d ratio should be 2 or 3.
8. According to the shank type, drill can be classified as______
a) straight shank
b) taper shank
c) both taper shank and straight shank
d) none of the mentioned
Answer: c
Explanation: Both taper shank and straight shank are the type of shank drill. Brace shank, straight shank, hex shank etc. are the type of shanks.
9. In ______ type, drill is held in spindle directly.
a) straight shank
b) taper shank
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: In taper type, drill is held in spindle directly. Taper shank drill is like a general purpose drill.
Answer: a
Explanation: In straight type, drill is held in chuck. It is also known as reduced shank or blacksmith’s drill.
This set of Machine Tools and Machining Questions & Answers for campus interviews focuses on “Classification of Drilling Machine : According to Specific Use”.
1. According to specific use, drill can be classified as______
a) center drill
b) step drill
c) both center drill and step drill
d) none of the mentioned
Answer: c
Explanation: Both are the examples of specific use drill. These special purpose drilling machines are intended for drilling multiple holes at a single setting.
2. Subland drill is type of drill according to______
a) l/d ratio
b) shank type
c) specific use
d) none of the mentioned
Answer: c
Explanation: Subland drill is the example of special purpose drilling machine. Apart from this, turret, micro drill press and muliple spindle drilling machines are also an example of specific purpose drilling machine.
3. Which of the following drill is very short drill?
a) center drill
b) subland drill
c) step drill
d) none of the mentioned
Answer: a
Explanation: Center drill is very short drill. Subland drill and step drill are large as compare to center drill.
4. Which of the following is not true for center drill?
a) the hole is used to support the center
b) it is the type of drill according to specific use
c) one taper has to be made here
d) none of the mentioned
Answer: d
Explanation: All the mentioned sentences are true. It has a taper and also it is a specific purpose drill machine. It is short drill.
5. In center drill, center has to be mounted on______
a) headstock
b) tailstock
c) headstock or tailstock
d) none of the mentioned
Answer: c
Explanation: The center can be mounted on either headstock or tailstock. Headstock and tailstock both are mounted on the bed.
6. In which of the following, l/d ratio is very long?
a) half round drill
b) gun drill
c) both half round drill and gun drill
d) none of the mentioned
Answer: c
Explanation: Here l=length and d=diameter. In both half round drill and gun drill this ratio is very long as they have large value of length as compare to diameter.
7. How many cutting edges are there in half round drill and gun drill?
a) one
b) two
c) may be one or two
d) none of the mentioned
Answer: a
Explanation: One edge is there in these both half round drill and gun drill. In these both drills, diameter is less as compare to length.
8. How many flutes are there in half round drill and gun drill?
a) one
b) two
c) may be one or two
d) none of the mentioned
Answer: c
Explanation: One or two flutes are there in these both machines. These both machines are specific purpose machines used for a specific purpose.
9. In half round drill, base is weak.
a) true
b) false
Answer: b
Explanation: This is false. The base is very strong in half round drill.
10. Which of the following is a pipe like cutting tool?
a) center drill
b) half round drill
c) gun drill
d) none of the mentioned
Answer: d
Explanation: Trepanning tool has this structure. It structure looks like a pipe.
Answer: b
Explanation: This is false. Trepanning is not feasible for hard materials. It is feasible for soft material.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Cutting Parameters of Drill”.
1. Which of the following are the cutting parameters used in drill?
a) cutting speed
b) feed
c) depth of cut
d) all of the mentioned
Answer: d
Explanation: All are the cutting parameters used in drill. Apart from these parameters, machining time, metal removal rate are also cutting parameters which are used in drill.
2. Which of the following is considered as the peripheral speed of the drill?
a) cutting speed
b) feed
c) depth of cut
d) none of the mentioned
Answer: a
Explanation: This is the definition of cutting speed. If you know the diameter of the drill and rpm of the drill, you can easily calculate the cutting speed.
3. Cutting speed generally express in_____
a) meter
b) meter/minute
c) meter*minute
d) none of the mentioned
Answer: b
Explanation: Cutting speed is simply a speed. So, its unit should be match with speed’s unit.
4. Formula for cutting speed is______
d=diameter of drill in mm, n=rpm of drill.
a) /1000
b) /1000
c) 3.14*d*n
d) none of the mentioned
Answer: b
Explanation: Though cutting speed is peripheral speed the distance covered through it must be equal to 3.14*d. N is rpm and 1000 is there as we are measuring it in mm.
5. The ______ of a drill is the distance the drill moves into the work at each revolution of the spindle.
a) depth of cut
b) feed
c) cutting speed
d) none of the mentioned
Answer: b
Explanation: This is the definition of feed. It is a distance/revolution.
6. The feed may be expressed in______
a) mm/revolution
b) mm*revolution
c) mm
d) none of the mentioned
Answer: a
Explanation: As per its definition, feed is the distance per revolution. So its unit should be match with this formula..
7. ______ is equal to half the diameter of the drill used.
a) feed
b) depth of cut
c) machining time
d) none of the mentioned
Answer: b
Explanation: This is the definition of depth of cut. Its simply a distance. Here one point is there, we always talk in terms of diameter in drill, never in terms of radius.
8. Depth of cut can be expressed in______
a) mm
b) mm/revolution
c) mm/minute
d) none of the mentioned
Answer: a
Explanation: It is simply a distance and so its unit should be match with distance’s unit.
9. The formula for depth of cut is______
d=diameter of the drill.
a) d/4
b) d/2
c) d
d) 2d
Answer: b
Explanation: Depth of cut is equal to half the diameter of the drill used. So if d is the diameter of drill then its formula must be equal to d/2..
10. If s2=feed per revolution, s1=feed per minute, n=rpm.
Which of the following is mathematically right?
a) s1=s2*n
b) s2=s1*n
c) s1*s2=n
d) none of the mentioned
Answer: a
Explanation: It can be solved by equating units both sides. Left side unit = feed/minute and Right side unit = feed / revolution * revolution/minute. So overall unit of right side = feed/minute. So, left side unit=right side unit.
11. Machining time is expressed in______
a) mm/minute
b) minute*minute
c) minute
d) none of the mentioned
Answer: c
Explanation: Machining time is simply a time. So its unit must be match with time’s unit.
12. If l=length of travel of the drill in mm, n=rpm of the drill, s= feed per revolution of the drill in mm. Then machining time can be given as_____
a) /s
b) /n
c) l/
d) none of the mentioned
Answer: c
Explanation: L/- This is the right formula for calculating machining time. Here l is expressed in mm, n is revolution/minute and s is expressed in mm. So by putting these all units in machining time’s formula we get the unit of the whole expression as minute. So our formula is right.
Answer: a
Explanation:
Metal removal rate = area of metal removed*rpm*feed/revolution and it equal to *n*feed/revolution. From this, we can easily derive the expression.
This set of Machine Tools and Machining Aptitude Test focuses on “Drilling Operation”.
1. Which of the following operation is performed to ensure the correct location of a hole by making it concentric with the axis of rotation?
a) parting
b) tapping
c) boring
d) none of mentioned
Answer: c
Explanation: This is the characteristic of boring. After the hole is made by drilling operation, boring is carried out. It is generally done to enlarge the diameter of the hole.
2. Which of the following operations can be done by same tool?
a) reaming and tapping
b) drilling and facing
c) counterboring and spot facing
d) none of the mentioned
Answer: c
Explanation: Counterboring and spot facing can be performed by same tool. Counter boring is an operation which nis carried out for providing recess for nuts or bolt heads.
3. Reaming doesn’t improve the surface finish.
a) true
b) false
Answer: b
Explanation: Reaming improves the surface finish. It generally enlarge the holes with great accuracy and give better dimensional accuracy-better surface finish.
4. Which of the following process is performed to provide seating for washer?
a) counterboring
b) spot facing
c) tapping
d) none of the mentioned
Answer: b
Explanation: As per the definition of spot facing process. In spot facing operation, some specific part of the workpiece is faced. It gives better flat,smooth surface to that workpiece.
5. To produce more accurate holes, which of the following operation should be performed first?
a) drilling
b) reaming
c) centering
d) boring
Answer: c
Explanation: As per the characteristic of all these operation, centering should be performed first before drilling, reaming and boring in order to produce more accurate holes. Center drill makes a hole. Now, this hole behave as a center of rotation for mentioned rest 3 operations.
6. To produce more accurate holes, which of the following operation should be performed last?
a) drilling
b) reaming
c) centering
d) boring
Answer: b
Explanation: As per the characteristic of all these operation, reaming should be performed last in order to produce more accurate holes. By using all rest 3 method, we make the hole with almost accuracy. But for final finish and extremely high accuracy, reaming is performed at the last.
7. Tapping is a forming process.
a) true
b) false
Answer: a
Explanation: As per the definition of taping process. The main advantage of taping is that is requires less operating conditions.
8. Which of the following process requires abundant coolant?
a) drilling
b) tapping
c) boring
d) none of the mentioned
Answer: b
Explanation: Tapping needs abundant coolant. Cutting fluid is the coolant generally designed for metal working process.Different types of fluids are there like oil, gel, aerosols and so on.
9. Tapping process is carried out on ______ machines.
a) drilling
b) tapping
c) both drilling and tapping
d) none of the mentioned
Answer: c
Explanation: Tapping process is carried out on both drilling and tapping machines. Taper is a shape which is produced and it has different diameter at both the ends
Answer: b
Explanation: Tapping is carried out for cutting internal threads because tapping process generally don’t need high operating conditions. They require less operating conditions.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Drilling Operation-2”.
1. Tapping is carried out by using tap tool.
a) true
b) false
Answer: a
Explanation: As per the definition of this process. A tap is also applied for cutting and forming female part of the mating pair like nuts.
2. Which of the following operation is carried out to make the hole dimensionally more accurate?
a) reaming
b) tapping
c) boring
d) none of mentioned
Answer: a
Explanation: Reaming is used for this purpose. Reaming also improve the surface finish which is its extra advantage.
3. Which of the following operation is performed to provide recess for bolt heads or nuts?
a) counterboring
b) spot facing
c) tapping
d) none of the mentioned
Answer: a
Explanation: As per the definition of counterboring process. Generally, counter boring is a process carried out for delivering recess for nuts etc.
4. Reaming is carried out by using a reamer.
a) true
b) false
Answer: a
Explanation: It is carried out by a reamer. Reamer is a cutting tool generally used for enlarging the hole with great accuracy.
5. Which of the following process is carried out to provide seating for head of screw?
a) counterboring
b) countersinking
c) tapping
d) none of the mentioned
Answer: b
Explanation: As per the definition of countersinking process. To make the cone or taper shape at the entrance of the hole, this process is used.
6. Countersinking process is carried out by using countersink tool.
a) true
b) false
Answer: a
Explanation: Countersink tool is used for countersinking process. Counter sinks are available as single flute and and multi flute tools.
7. Taping process employs high operating conditions.
a) true
b) false
Answer: b
Explanation: This is false. Taping process employs low operating conditions.
8. To produce more accurate holes, which of the following operation should be performed third?
a) drilling
b) reaming
c) centering
d) boring
Answer: d
Explanation: As per the characteristic of all these operation, boring should be performed third in order to produce more accurate holes. Boring is used to make hole of size for which drill is not available. It generally enlarge the hole.
9. To produce more accurate holes, which of the following operation should be performed second?
a) drilling
b) reaming
c) centering
d) boring
Answer: a
Explanation: As per the characteristic of all these operation, drilling should be performed second in order to produce more accurate holes. Drilling doesn’t make hole of exact dimension and accuracy. For exact dimension boring is carried out and for final dimensional accuracy reaming is carried out.
Answer: c
Explanation: Boring is used for this purpose. Apart from this, boring aslo insures the exact location of a hole. It makes the hole concentric with the axis of rotation.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Drilling Operation-1”.
1. A hole is being drilled with 5 mm drill at a feed of 0.1 mm/revolution and rpm is 200. Calculate the metal removal rate in mm 3 /minute.
a) 392.5
b) 785
c) 1570
d) none of the mentioned
Answer: a
Explanation: Here, we have the value of diameter, feed and rpm. So, from the formula, m= / 4, we can easily get the value of metal removal rate.
2. If drill is 2.5 mm, feed is 0.35 mm/revolution and metal removal rate is 40 mm 3 /minute. Then find out the value of rpm.
a) 46.6
b) 23.3
c) 93.2
d) 11.65
Answer: b
Explanation: From the formula, m= / 4. From this formula, we can easily calculate rpm. Rpm means revolution per minute.
3. If drill is 5.5 mm, metal removal rate is 65 mm 3 /minute and rpm is 130.Then find the value of feed in mm/revolution.
a) 0.02
b) 0.2
c) 0.04
d) 0.4
Answer: a
Explanation: Feed is the distance the drill moves into the work at each revolution of the spindle. From the formula, m= / 4, we can easily calculate feed.
4. If metal removal rate is 120 mm 3 /minute, rpm is 105 and feed is 0.1 mm/revolution. Then find the value of drill in mm.
a) 14.6
b) 3.8
c) 7.6
d) 1.9
Answer: b
Explanation: From the formula, m= / 4, we can calculate the value of drill.
5. If value of the diameter of the drill = 10mm, then find the value of the depth of cut .
a) 5
b) 10
c) 20
d) none of the mentioned
Answer: a
Explanation: Value of diameter of the drill is always twice to that the value of the depth of cut. From the formula, d1= d2/2.
6. The diameter of the drill is 15 mm and rpm of drill is 5. Find the value of cutting speed in meter/minute.
a) 235.5
b) 0.2355
c) 0.075
d) 75
Answer: b
Explanation: From the formula, cs = /1000. Cutting speed is the peripheral speed of the drill.
7. Rpm is 10 and feed per revolution is 5. Then find the value of feed per minute .
a) 2
b) 4
c) 1
d) none of the mentioned
Answer: d
Explanation: Rpm = f1/f2. Here rpm=10 and f2=5. So value of f1 should be 50.
8. If depth of cut is 20 mm, then find the value of diameter of the drill.
a) 10
b) 20
c) 40
d) none of the mentioned
Answer: c
Explanation: Depth of cut=diameter/2. It is simply a distance.
9. Feed per minute is 20 and rpm is 5. Then find the value of feed per revolution .
a) 2
b) 4
c) 1
d) 0.5
Answer: b
Explanation: Rpm = f1/f2. Here f1=20 and n=5. So, f2 should be 4.
10. If t=2minute, n=2rpm and s=5 mm. Then find the value of l. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.
a) 5
b) 10
c) 20
d) none of the mentioned
Answer: c
Explanation: From the formula, t= l / . Here t=2, n=2 and s=5. Put all these values with their units in the mentioned equation,you will easily get the answer as 20 mm.
11. If d=2, n=1 and f=2. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm 3 /minute.
a) 3.14
b) 6.28
c) 12.56
d) none of the mentioned
Answer: b
Explanation: From the formula, m= / 4, we can easily get the value of m. Metal removal rate means the rate at which the metal is removed during the operation.
12. If d=2, n=2 and m=3. Then find the value of f. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm 3 /minute.
a) 0.238
b) 0.477
c) 0.119
d) none of the mentioned
Answer: b
Explanation: From the formula, m= / 4, we can easily get the value of feed. Feed may also be expressed as feet per minute or mm/minute.
13. If m=5, n=2 and f=3. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm 3 /minute.
a) 1.03
b) 1.065
c) 0.266
d) none of the mentioned
Answer: b
Explanation: From the formula, m= / 4, we can easily find the value of m.
Answer: c
Explanation: From the formula, cs = /1000, we can easily find value of n. N means rpm-revolution per minute. It is an important term in any operation.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Drilling Operation-2”.
1. A hole is being drilled with 1.5mm drill at a feed of 0.3 mm/revolution and rpm is 70. Calculate the metal removal rate in mm 3 /minute.
a) 18.5
b) 37
c) 74
d) 148
Answer: b
Explanation: Metal removal rate means the rate at which the metal is removed during the operation. From the formula, m= / 4, we can easily calculate metal removal rate.
2. If drill is 2 mm, feed is 0.2 mm/revolution and metal removal rate is 50 mm^/minute. Then find out the value of rpm.
a) 318.4
b) 159.2
c) 79.6
d) 39.8
Answer: c
Explanation: From the formula, m= / 4. Put all the given values with their respective units in the above equation and you will get the value of n as 79.6 .
3. If drill is 3.15 mm, metal removal rate is 55 mm 3 /minute and rpm is 170.Then find the value of feed in mm/revolution.
a) 0.02
b) 0.2
c) 0.04
d) 0.4
Answer: c
Explanation: During each revolution of spindle drill moves into the work. That distance is known as the feed.From the formula, m= / 4.
4. If metal removal rate is 100 mm 3 /minute, rpm is 165 and feed is 0.01 mm/revolution. Then find the value of drill in mm.
a) 8.78
b) 4.41
c) 19.3
d) 77.8
Answer: a
Explanation: From the formula, m= / 4. By substituting all the given values in the above equation, we can easily get the value of drill.
5. If diameter of the drill is 20 mm. Then find the value of depth of cut in mm.
a) 20
b) 10
c) 40
d) none of the mentioned
Answer: b
Explanation: Depth of cut=diameter/2. Depth of cut is equal to half the diameter of the drill used.
6. The diameter of the drill is 20 mm and rpm of drill is 10. Find the value of cutting speed in meter/minute.
a) 0.628
b) 628
c) 0.2
d) 200
Answer: a
Explanation: From the formula, cs = /1000. Cutting speed in a drilling operation is taken as the peripheral speed of the drill.
7. Feed per minute is 10 and feed per revolution is 5. Then find the value of rpm.
a) 2
b) 4
c) 1
d) 0.5
Answer: a
Explanation: Rpm = f1/f2. Here, f1=10 and f2=5. We can easily get the value of rpm as 2.
8. If the depth of cut is 10mm, then find the value of the diameter of the drill .
a) 5
b) 10
c) 20
d) none of the mentioned
Answer: c
Explanation: From the formula, d1= d2/2. Here d1=10. So, d2 sholud be 5.
9. If l=10mm, n=2 rpm and s=5 mm. Then find the value of t. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.
a) 0.5
b) 1
c) 2
d) none of the mentioned
Answer: b
Explanation: From the formula, t= l / . By putting all the given values in the above equation, we can easily get the value of machining time as 1 minute.
10. If l=10mm, n=2 rpm and t=0.5 minute. Then find the value of s. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.
a) 5
b) 10
c) 20
d) none of the mentioned
Answer: b
Explanation: From the formula, t= l / , we can calculate the feed per revolution. Feed per revolution may be defined as the axial distance moved by the drill into the work per revolution.
11. If l=20 mm, t=2 minute and s=5 mm. Then find the value of t. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.
a) 0.5
b) 1
c) 2
d) none of the mentioned
Answer: c
Explanation: From the formula, t= l / . Substitute all the given values in the above equation and you can get the value of t as 2.
12. If d=1, n=1 and f=4. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm 3 /minute.
a) 0.08
b) 1
c) 0.3184
d) none of the mentioned
Answer: c
Explanation: From the formula, m= / 4. Here d,n and f are given. Substitute these values in above equation, you will easily get value of m as 0.3184 .
13. If d=2, n=4 and f=1. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm 3 /minute.
a) 0.798
b) 1
c) 0.6369
d) none of the mentioned
Answer: a
Explanation: From the formula, m= / 4. Substitute all tyhe given values in the above equation and you will easily get the value.
Answer: a
Explanation: From the formula, cs = /1000. Substitute all tyhe given values in the above equation and you will easily get the value of d.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Working Principle of Shaper”.
1. Which of the following is used for machining larger jobs?
a) shaper
b) planer
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Planer is used for the purpose of machining too large and heavy jobs. There is a table in planer known as platen on which the work piece is fixed firmly and the operation is performed.
2. Which of the following is used for machining smaller jobs?
a) shaper
b) planer
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Shaper is used for the purpose of machining smaller jobs. It is mainly used for producing flat and plan surfaces.
3. Which of the following machine is primarily intended for producing flat surfaces?
a) shaper
b) drilling
c) lathe
d) none of the mentioned
Answer: a
Explanation: Shaper is intended for this purpose. It was invented in 1836 by James Nasmyth.
4. Which of the following operation can be performed in shaper?
a) gear cutting
b) keyways cutting
c) curvilinear contours
d) all of the mentioned
Answer: d
Explanation: All mentioned operations can be performed in shaper. Although it is used mainly for producing flat surfaces but its a versatile machine and can be used for other purposes too.
5. In shaper, the job is kept_____
a) stationary
b) rotating
c) reciprocating
d) none of the mentioned
Answer: a
Explanation: The job is kept stationary in this machine. In shaper, cutting tool moves in order to perform operations.
6. In shaper, the cutting tool is made to reciprocate across the job.
a) true
b) false
Answer: a
Explanation: This is true. cutting tool moves in order to perform the work. Only forward movement is useful. Work is only done in forward movement.
7. Which stroke is cutting stroke in shaper?
a) forward
b) return
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Forward stroke is cutting stroke in shaper because only in forward stroke work-cutting is done.
8. Which stroke is idle stroke in shaper?
a) forward
b) return
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Return stroke is idle stroke in shaper because no useful work is done in this stroke.
9. No useful work is done in forward stroke in shaper.
a) true
b) false
Answer: b
Explanation: In return stroke, no useful work is done. The return stroke is also known as idle stroke.
10. At the end of one cycle, job is given a feed motion______ to the direction of tool movement.
a) parallel
b) perpendicular
c) anti-parallel
d) none of the mentioned
Answer: b
Explanation: At the end of one cycle, job is given a feed motion perpendicular to the direction of tool movement. Feed is the relative movement of the tool or work.
Answer: a
Explanation: This is true. Depth of cut is the thickness of metal that is removed in one cut.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Shaper Basics – 1”.
1. In shaper, the tool head consists of_______
a) tool post
b) tool slide
c) clamper box
d) all of the mentioned
Answer: d
Explanation: All mentioned are the parts of tool head. Toolhead of a shaper holds the tool rigidly and provides vertical and angular feed movement.
2. The main parts of shaper are _______
a) base and body
b) ram and tool head
c) crossrail and body
d) all of the mentioned
Answer: d
Explanation: All mentioned are the parts of shaper. Due to these parts, this machine is arranged in such a manner that it can produce flat surfaces easily and perform other operations too.
3. The body of the shaper comprises of ________
a) pillar
b) column
c) frame
d) all of the mentioned
Answer: d
Explanation: All are the parts of shaper. Column and pillar are used to stabilize the machine and are mounted on base. The frame is the basic structure of this machine.
4. The base of the shaper is a heavy cast iron casting.
a) true
b) false
Answer: a
Explanation: As per the construction of the base. It must be made of heavy cast iron casting because the whole machine including pillar, frame, column are mounted on the base. So base must be capable and strong enough to withstand it.
5. Which of the following part of shaper supports the entire load of the machine?
a) base
b) crossrail
c) frame
d) none of the mentioned
Answer: a
Explanation: Base of shaper supports the entire load of the machine. All other parts are mounted on the base. It is the basic foundation of this machine.
6. The base of the shaper is not able to withstand the vibration.
a) true
b) false
Answer: b
Explanation: The base of shaper is able to withstand the vibration. In shaper, reciprocating feed is given so there is always a chance of higher vibration and since the entire machine is mounted on the base it is necessary that this base must be able to withstand vibration for the safety purpose.
7. Drive mechanism consists of ________
a) main drives
b) the gear box
c) quick return mechanism
d) all of the mentioned
Answer: d
Explanation: All are the parts of drive mechanism. Shapers may have drive mechanism or hydraulic mechanism.
8. Quick return mechanism is responsible for ram movement.
a) true
b) false
Answer: a
Explanation: As per the working of quick return mechanism. Whenever there is a need to convert rotary motion into reciprocating motion, quick return mechanism is used.
9. The top of the body provides guideways for______
a) ram
b) crossrail
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: As per the construction and working of shaper body. Guideways are like a track or path and ram is a reciprocating member of shaper.
Answer: b
Explanation: This is false. Saddle slides along the crossrail which holds the table firmly on its top.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Shaper Basics – 2”.
1. The front of the body provides guideways for _______
a) ram
b) crossrail
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: The front of the body provides guideways for crossrail . Crossrail has two parallel guideways on its top in the vertical plane.
2. The crossrail is mounted on the______ of the body frame
a) front
b) back
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: The crossrail is mounted on the front of the body frame. Crossrail can slide up and down in the vertical frame.
3. The ram can be moved up and down.
a) true
b) false
Answer: a
Explanation: These both movements are possible in the ram. It houses a screwed shaft for altering the position of ram.
4. The _______ movements of crossrail permit the jobs of different heights to be accommodated below the tool.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: The vertical movements of crossrail permit the jobs of different heights to be accommodated below the tool. The table may be raised or lowered to accommodate different sizes of job by rotating an elevating screw which causes the crossrail to slide up and down.
5. Saddle carries the work table.
a) true
b) false
Answer: a
Explanation: This is true. It carries the table which can be raised or lowered to accommodate different sizes.
6. Which movement of ram is called stroke?
a) only back
b) only forth
c) back and forth
d) none of the mentioned
Answer: c
Explanation: Back and forth movement of ram is called stroke, but only in forward stroke useful work is done.
7. The stroke can be adjusted according to the length of the workpiece to be machined.
a) true
b) false
Answer: a
Explanation: This is true. Two strokes are there: forward stroke and return stroke. Time for forward stroke should be more than return stroke for better performance.
8. The ram is driven back and forth in its slides by crank slider mechanism.
a) true
b) false
Answer: b
Explanation: This is false. The ram is driven back and forth in its slides by slotted link mechanism.
9. Shaper can produce contours of ______
a) concave
b) convex
c) both concave and convex
d) none of the mentioned
Answer: c
Explanation: Shaper can produce contours of both concave and convex. There are some contour type shapers which are fixed by an additional mechanism known as tracer mechanism.
Answer: b
Explanation: This is false. Shaper can produce flat surface in all horizontal ,vertical and angular planes. This is the main purpose shaper. It is primarily intended for the purpose of producing flat surfaces.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Types of Shaper”.
1. According to the type of mechanism used for giving reciprocating motion to the ram, shaper can be classified as______
a) crank type
b) geared type
c) both crank type and geared type
d) none of the mentioned
Answer: c
Explanation: According to the type of mechanism used for giving reciprocating motion to the ram, shaper can be classified as both crank type and geared type. Here the ram means the reciprocating member of the shaper which houses a screwed shaft.
2. According to the type of design of the table, lathe can be classified as_____
a) standard shaper
b) universal shape
c) both standard shaper and universal shaper
d) none of the mentioned
Answer: c
Explanation: According to the type of design of the table, lathe can be classified as both standar shaper and universal shaper. Standard shaper is also known as plain shaper which has only two movements vertical and horizontal to get feed.
3. Push type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: c
Explanation: Push type shaper is type of shaper according to type of cutting stroke. In push type shaper, at the time when the ram is moving away/going away from the column, removal of metal is done.
4. horizontal type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: b
Explanation: horizontal type shaper is type of shaper according to position and travel of the ram. When we talk about horizontal shaper, it is mostly used for producing flat surfaces.
5. Draw type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: c
Explanation: Draw type shaper is type of shaper according to, type of cutting stroke. In this type of shaper, at the time when the ram is moving towards in the direction of column, the metal removal is done.
6. Travelling head type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: b
Explanation: Travelling head type shaper is type of shaper according to, position and travel of the ram. In workshop, if we have a machine that cannot be fixed on the machine or can not be moved at that time we use this shaper.
7. Hydraulic type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: d
Explanation: As per the classification of this machine, it can be classified according to the type of mechanism used for giving reciprocal motion to the ram. In hydraulic shaper, not a penny sound is produced. So this shaper machine can be termed as eco friendly machine to some extent.
8. In crank type shaper, for performing an operation a multi point cutting tool is employeed.
a) true
b) false
Answer: a
Explanation: This is false. In crank type shaper, for performing an operation a SINGLE point cutting tool is employed. The crank mechanism is used in order to drive reciprocating ram.
9. Vertical type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: b
Explanation: Vertical type shaper is type of shaper according to position and travel of the ram. In vertical type shaper ram has its motion in vertical direction, that’s why it is known as vertical shaper.
Answer: a
Explanation: As per the definition of this machine. It is a reciprocating type machine introduced by James Nasmyth in 1836 for producing flat surfaces.
This set of Machine Tools and Machining Problems focuses on “Parts of Standard Shaper”.
1. Standard shaper is also known as plain shaper.
a) true
b) false
Answer: a
Explanation: As per the definition of standard shaper. This shaper uses a linear tool path for machining.
2. A shaper is termed as standard when the table has _____ movements.
a) only one
b) only two
c) only three
d) none of the mentioned
Answer: b
Explanation: This is the definition of standard shaper. Other types of shaper are horizontal shaper, draw-cut shaper, universal shaper etc.
3. Which type of movements of table can be given to the feed?
a) horizontal
b) vertical
c) horizontal or vertical
d) none of the mentioned
Answer: c
Explanation: Both horizontal and vertical table movements can be given to feed. Linear relative motion between a work piece and single point cutting tool is given.
4. The table must be supported at the outer end.
a) true
b) false
Answer: b
Explanation: It is not compulsory that the must be supported at the outer end. It may or may not be supported at outer end.
5. The base of standard is made of cast iron.
a) true
b) false
Answer: a
Explanation: As per the construction of shaper machine, it may be made of cast iron as it provide great strength and stability.
6. The base of the standard shaper is able to_____
a) resist vibration
b) take up high compressive
c) both resist vibration and take up high compressive
d) none of the mentioned
Answer: c
Explanation: This is the property of standard shaper’s base. As it is made of cast iron and other strong component it has these properties.
7. The base may be rigidly bolted to the floor of the shop or on the bench according to the size of the machine.
a) true
b) false
Answer: a
Explanation: As per the construction of standard shaper. This type of arrangement of base provide great stability to machine and make the machine more suitable for its purpose.
8. Which of the following is a box like casting mounted up on the base.
a) column
b) crossrail
c) toolhead
d) none of the mentioned
Answer: a
Explanation: Column is situated on the base so we can feel that it is a box like casting mounted up on the base because of its arrangement.
9. Which of the following encloses the ram drive mechanism?
a) crossrail
b) toolhead
c) saddle
d) none of the mentioned
Answer: d
Explanation: Column encloses the ram drive mechanism. This ram can be adjusted for stroke. It can move faster in return stroke due to its geometry.
10. The ram reciprocates on the top of the column.
a) true
b) false
Answer: a
Explanation: This is true. In ram movement, due to slotted link, ram move faster in case of return stroke as compare to forward stroke..
11. How many machined guideways are provided on the top of the column?
a) one
b) two
c) four
d) none of the mentioned
Answer: b
Explanation: Two guideways are provided. Guideways are like a tracko or path along with simething move.
12. The _____ face of the column serves as the guideways for the crossrail.
a) front horizontal
b) back horizontal
c) front vertical
d) back vertical
Answer: c
Explanation: Front vertical face serves as the guideways for the crossrail.
13. The ram is reciprocating member of the shaper.
a) true
b) false
Answer: a
Explanation: It is the property of ram. Its speed is high in case of return stroke and low in forward stroke.
14. Which type of feed movements of tool does the toolhead provide?
a) vertical
b) angular
c) both vertical and angular
d) none of the mentioned
Answer: c
Explanation: Toolhead provides these both feed movements of tool. Shaper toolhead is made of the clapper box, clapper block, toolpost and hinge pin.
Answer: a
Explanation: It is the function of the toolhead. It works like an apron.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Parts of Standard Shaper – 2”.
1. Which of the following part does column contain?
a) lever
b) handle
c) both lever and handle
d) none of the mentioned
Answer: c
Explanation: Column includes both lever and handle for operating the machine. Lever and handle are used to operate a machine.
2. How many guideways does crossrail has on its top?
a) one
b) two
c) three
d) none of the mentioned
Answer: b
Explanation: Crossrail has two guideways on its top. Guideways are a track or rail or path which are used along with movement.
3. The crossrail has parallel guideways on its top in horizontal plane.
a) true
b) false
Answer: b
Explanation: Crossrail doesn’t has parallel guideways on its top in horizontal but it has guideways on its top in vertical plane.
4. The guideways are ______ to the ram axis in crossrail.
a) parallel
b) perpendicular
c) 45 degree inclined
d) none of the mentioned
Answer: b
Explanation: As per the construction of the crossrail. Guideways are generally a path which are used for movement.
5. The horizontal cross feed screw is fitted _____ to the top guideways.
a) parallel
b) horizontal
c) 45 degree inclined
d) none of the mentioned
Answer: a
Explanation: It is fitted parallel to the top guideways. Cross feed is a type of feeding mechanism which acts transversely with respect to the longitudinal axis.
6. The vertical cross feed screw actuates the table to move in a crosswise direction.
a) true
b) false
Answer: b
Explanation: This is false. The horizontal cross feed screw actuates the table to move in a crosswise direction.
7. In crossrail, the table may be raised or lowered to accommodate different sizes of jobs.
a) true
b) false
Answer: a
Explanation: As per the working of the crossrail. The vertical motion of table is possible in crossrail so that the table can be adjusted for different size of work and can perform more better.
8. Elevating screw causes the crossrail to slide up and down on the____ face of the column.
a) horizontal
b) vertical
c) bottom
d) top
Answer: b
Explanation: Elevating screws enables vertical motion of crossrail. hence crossrail can easily slide up and down on the vertical face of the column.
9. The saddle is mounted on _____
a) ram
b) toolhead
c) column
d) crossrail
Answer: d
Explanation: It is mounted on crossrail. Saddle causes the different movements of table.
10. Crosswise movements of the saddle causes the table to move sideways.
a) true
b) false
Answer: a
Explanation: This is the working of a saddle. This saddle holds the table firmly on its top.
11. The cross feed screw can be rotated by_____
a) hand
b) power
c) both hand or power
d) none of the mentioned
Answer: c
Explanation: It can be rotated by hand or power. This moment causes the table to move sideways.
12. The table is bolted to the saddle.
a) true
b) false
Answer: a
Explanation: As per the construction of table. It is a box like casting having T-slots both on top and sides for clamping the work.
13. Which type of movement does table receives?
a) only crosswise
b) only vertical
c) both crosswise and vertical
d) none of the mentioned
Answer: c
Explanation: Table receives both movements.This table is placed on the base in front of crossrail.
14. The ram is the reciprocating member of the shaper.
a) true
b) false
Answer: a
Explanation: This is true. It houses a screwed shaft for altering the position of the ram with respect to the work and holds the tool head at the extreme forward end.
Answer: a
Explanation: This is true. The toolhead of a shaper holds the tool rigidly, provides vertical and angular feed movement of the tool and allows the tool to have an automatic relief during its return stroke .
This set of Basic Machine Tools and Machining questions and answers focuses on “Shaper Mechanism Types”.
1. In a shaper_____ movement of the drive is converted into _____ movement.
a) rotary, reciprocating
b) reciprocating, rotary
c) rotary, rotary
d) none of the mentioned
Answer: a
Explanation: Rotary movement of the drive is converted into reciprocating movement.Rotary motion is something like wheel turning and reciprocating motion means back and forth linear mtioon.
2. The size of a shaper is given by the maximum stroke length of the ram in mm.
a) true
b) false
Answer: a
Explanation: It is the property of shaper. Here the ram is the reciprocating member of the shaper.
3. The usual size of shaper varies from _____ mm.
a) 75 to 90
b) 175 to 900
c) 25 to 60
d) 125 to 600
Answer: b
Explanation: The usual size of shaper ranges from 175 mm to 900 mm basede upon its application and working.
4. The change of the movement of the drive is done by the mechanism contained within the _____ of the machine.
a) crossrail
b) column
c) toolhead
d) none of the mentioned
Answer: b
Explanation: It is the function of column. Column is a part of shaper which is mounted on the base.
5. The ram holding the tool gets _____ movement.
a) rotary
b) reciprocating
c) both rotary and reciprocating
d) none of the mentioned
Answer: b
Explanation: It gets reciprocating movement.Rotary motion is something like wheel turning and reciprocating motion means back and forth linear mtioon.
6. In a standard shaper, the metal is removed in_____ stroke.
a) forward
b) return
c) both forward and return
d) none of the mentioned
Answer: a
Explanation: The metal is removed in forward stroke because only in forward stroke the useful work is done.
7. To reduce the total cutting time, the standard shaper is designed to complete forward stroke______
a) slowly
b) faster
c) at moderate speed
d) none of the mentioned
Answer: a
Explanation: It is the desired property for standard shaper because only in forward stroke the useful work is done. So it should be slower than return stroke.
8. To reduce the total cutting time, the standard shaper is designed to complete return stroke______
a) slowly
b) faster
c) at moderate speed
d) none of the mentioned
Answer: b
Explanation: In return stroke no useful work is done so to reduce cutting time it is advisable to complete the return stroke as fast as possible.
9. Quick return mechanism and reciprocating movement of the ram is obtained in _____ mechanism.
a) crank and slotted link mechanism
b) whithworth quick return mechanism
c) hydraulic shaper mechanism
d) all of the mentioned
Answer: d
Explanation: These both desired properties are obtained in all mentioned mechanisms. These are desired properties which is needed for any mechanism to perform more accurately and better.
Answer: a
Explanation: An electric motor rotates at constant speed in crank and slotted mechanism. As the crank rotates, the slotted link also oscillates. Here slotted link means lever.
This set of Basic Machine Tools and Machining questions and answers focuses on “Shaper Mechanism Types”.
1. Bull gear also serves as a crank for the slotted link mechanism.
a) true
b) false
Answer: a
Explanation: It is the function of bull gear. Here the slotted link means lever.
2. In shaper mechanism, adjustment to be made before machining are_____
a) ramp speed
b) stroke adjustment
c) position adjustment
d) all of the mentioned
Answer: d
Explanation: All these adjustment should be made before machining time in order to perform job more accurately and in a better way.
3. The slide of the lever can move radially _____
a) inward
b) outward
c) inward or outward
d) none of the mentioned
Answer: c
Explanation: The slide of the lever can move radially inward or outward. This is done in order to vary the radius of the crank.
4. Stroke adjustment is done by varying the radius of the crank.
a) true
b) false
Answer: a
Explanation: As per the mechanism of shaper. Depending upon the length of the job to be shaped, stroke length must be adjusted.
5. In shaper mechanism, nearer the slide block to the center, _____ is the stroke.
a) smaller
b) larger
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: In shaper mechanism, nearer the slide block to the center, smaller is the stroke and vice versa. More far the slide block to the center, larger is the stroke.
6. In order to adjust the position of ram, the ram fixing screw is loosened.
a) true
b) false
Answer: a
Explanation: When a job is mounted on the table of the shaper, the reciprocation of the ram may not occur over the length of the job properly. In order to adjust the position of ram, the ram fixing screw is loosened, the ram is then moved to the required position and the screw tightened again.
7. The depth of cut is given by raising the tool slide on the tool head.
a) true
b) false
Answer: b
Explanation: The depth of cut is given by lowering the tool slide on the tool head. This is done by using hand wheel.
8. The ratchet wheel is fixed to the feed screw.
a) true
b) false
Answer: a
Explanation: As per the feed mechanism of the shaper. Ratchet is a device that allow continuous motion in only one direction and oppose motion in opposite direction.
9. The feed screw of the table rotates through a small angel in a direction _____ to the ram.
a) parallel
b) perpendicular
c) anti-parallel
d) none of the mentioned
Answer: b
Explanation: As the crank disk keyed to the shaft of Bull gear rotates, the lever oscillates about the fulcrum movement of the lever in the anticlockwise direction results in the pawl engaging with the ratchet wheel and rotating it through a fraction of a rotation. When this happens, the feed screw of the table rotates through a small angel in a direction perpendicular to the ram.
Answer: a
Explanation: As per the definition of crank and slotted link mechanism. This makes the ram reciprocate and therefore the cutting tool fixed to it.
This set of Advanced Machine Tools and Machining Questions & Answers focuses on “Shaper Cutting Parameters”.
1. Which type of cutting parameters are there in shaper?
a) feed
b) depth of cut
c) machining time
d) all of the mentioned
Answer: d
Explanation: Feed, depth of cut, machining time all are cutting parameters. Apart from these, cutting speed and metal removal rate are also termed as cutting parameters.
2. The cutting action in shaper is intermittent.
a) true
b) false
Answer: a
Explanation: As per the definition of this machine. The shaper is a reciprocating machine which works only in forward stroke.
3. In shaper, cutting speed is expressed only in ______ stroke.
a) forward
b) return
c) both forward and return
d) none of the mentioned
Answer: a
Explanation: Only in forward stroke, cutting speed is expressed because only in forward stroke useful work is done.
4. What is the unit of cutting speed?
a) meter/minute
b) meter 2 /minute
c) meter
d) none of the mentioned
Answer: a
Explanation: Cutting speed is simply a speed. So its unit should be the unit of time. Here, meter/minute is more appropriate unit for cutting speed.
5. Calculation of cutting speed is quite difficult in shaper compare to others.
a) true
b) false
Answer: a
Explanation: It is quite difficult to calculate cutting speed as we have to measure the time required by the cutting stroke.
6. Cutting speed= / .
a) true
b) false
Answer: a
Explanation: It is the formula for calculating the cutting speed.It may be expressed as length / time.
7. If n=number of strokes of the ram per minute or rpm of the bull wheel, l=length of the cutting stroke in mm, m= the ratio between return time to cutting time, then find the formula for cutting stroke.
a) n*l*m / 100
b) n*l* / 100
c) /
d) none of the mentioned
Answer: b
Explanation: ) – It is the right formula for calculating the cutting speed.
8. Feed is always given when the tool is cutting the metal.
a) true
b) false
Answer: b
Explanation: This is false. The feed is always given when the tool is not cutting the metal.
9. The feed is always given at the ______ of the return stroke.
a) starting
b) end
c) both at the starting and at the end
d) none of the mentioned
Answer: b
Explanation: It is always given at the end of the return stroke because only in the forward stroke useful work is done.
Answer: a
Explanation: It is expressed in mm. Feed is simply a distance so it unit should be the unit of distance.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Shaper Cutting Parameters – 2”.
1. The feed is the relative movement of tool or work.
a) true
b) false
Answer: a
Explanation: This is the definition of feed. It is simply a distance measured with help of relative movement of tool or work.
2. Feed is in direction _______ to the axis of reciprocation of the arm per double stroke.
a) parallel
b) perpendicular
c) 45 degree inclined to both planes
d) none of the mentioned
Answer: b
Explanation: Feed is in direction perpendicular to the axis of reciprocation of the arm per double stroke because only in this case we get the efficient feed and accuracy.
3. Depth of cut is thickness of metal that is removed in two cut.
a) true
b) false
Answer: b
Explanation: Depth of cut is thickness of metal that is removed in one cut. Depth of cut is always measured in one cut.
4. Depth of cut is the _______ distance between machined surface and non-machined surface of the workpiece.
a) parallel
b) perpendicular
c) 45 degree inclined to both planes
d) none of the mentioned
Answer: b
Explanation: It is the perpendicular distance. Depth of cut is thickness of metal that is removed in one cut.
5. Depth of cut is expressed in ______
a) mm
b) mm/minute
c) minute
d) none of the mentioned
Answer: a
Explanation: Depth of cut is simply a distance and so its unit should be match with distance’s unit.
6. Depth of cut may be given by _____
a) tool head slide
b) lifting the table
c) both tool head slide or drifting the table
d) none of the mentioned
Answer: c
Explanation: Depth of cut may be given by tool head slide or lifting the table. These two methods are used because of its accuracy and good performance.
7. If v=cutting speed, s= feed in mm, b=width of work in mm, m=the ratio between the return time to cutting time and l= length of the cutting stroke in mm. Then, find the formula for time.
a) /
b) ) /
c) /
d) none of the mentioned
Answer: b
Explanation: )/ -It is the formula for machining time. Machining time is simply time taken by machine to perform the job.
8. What is the unit for machining time?
a) minute
b) mm/minute
c) mm
d) none of the mentioned
Answer: a
Explanation: It is simply a time and so its unit should match with time’s unit.
9. If d=depth of cut in mm, f=feed in mm/stroke, n=stroke/min, l=length of stroke in mm, m= ratio of return stroke time to cutting stroke time, then find the formula for metal removal rate.
a) f*d*l*n*
b) f*d*l*n*m
c) f*d*l*n*m/1000
d) none of the mentioned
Answer: a
Explanation: ) – is the right formula for metal removal rate as per the definition of metal removal rate.
Answer: a
Explanation: Metal removal rate includes feed, depth of cut, n= rpm , length and m. Writing all terma appropriately with uints, you get Mm^3/minute as the unit for metal removal rate.
This set of tricky Machine Tools and Machining questions and answers focuses on “Numericals on Shaper Machine”
1. If the length of the cutting stroke is 10 mm and time required by the cutting stroke is 5 second, then find the value of cutting speed in mm/second.
a) 2
b) 0.5
c) 4
d) none of the mentioned
Answer: a
Explanation: C.S.=length / time. Here, length is 10 mm and time is 5 second. So by dividing 10 by 5 we can easily get the answer as 2.
2. If l=5, b=5, t=0.4, v=3 and m= 2. Find the value of s. l=length of the cutting stroke in mm, b=width of the work in mm, s=feed in mm, v=cutting speed in mm/minute, m=the ratio between return time to cutting time and t=machining time in minute.
a) 0.025
b) 0.0125
c) 0.00625
d) none of the mentioned
Answer: c
Explanation: From the formula, t= l*b* / . By putting all given values, we can easily get answer as 0.00625.
3. If n=rpm of the bull wheel=2, l= length of the cutting stroke in mm=2.5mm and cutting speed = 0.5 mm/minute. m= the ratio between return time to cutting time. Then find the value of m.
a) 10
b) 9
c) 100
d) 99
Answer: b
Explanation: C.S. = n*l* / 100. Here, n=2, l=2.5, cs=0.5 and m can be found by putting these values in the above equation.
4. If n=rpm of the bull wheel=4 ,cs =cutting speed=3mm/minute and m= the ratio between return time to cutting time= 5. Then find the value of length of cutting stroke in mm.
a) 25
b) 50
c) 12.5
d) 6.24
Answer: c
Explanation: C.S. = n*l* / 100. Here, n=4, cs=3, m=5 and l can be found out by putting these values in above equation.
5. If l=9, b=5, s=3, v=2 and t=0. 0375. Find the value of m. l=length of the cutting stroke in mm, b=width of the work in mm, s=feed in mm, v=cutting speed in mm/minute, m=the ratio between return time to cutting time and t=machining time in minute.
a) 2
b) 5
c) 10
d) none of the mentioned
Answer: d
Explanation: From the formula, t= l*b* / , m should be 4.
6. If n=rpm of the bull wheel, cs =cutting speed=3.2mm/minute and m= the ratio between return time to cutting time= 3 and l=length of cutting stroke =8mm. Find the value of n.
a) 2
b) 5
c) 12
d) none of the mentioned
Answer: d
Explanation: C.S. = n*l* / 100 and value of n should be 10 by putting all parameters in above equation.
7. If l=10, b=5, s=4, v=3 and m= 2. Find the value of t. l=length of the cutting stroke in mm, b=width of the work in mm, s=feed in mm, v=cutting speed in mm/minute, m=the ratio between return time to cutting time and t=machining time in minute.
a) 0.025
b) 0.0125
c) 0.00625
d) none of the mentioned
Answer: b
Explanation: From the formula, t= l*b* / , we can easily calculate the value of t by putting all these values in given equations.
8. If l=15, b=4, s=3, m=2 and t= 1. Find the value of v. l=length of the cutting stroke in mm, b=width of the work in mm, s=feed in mm, v=cutting speed in mm/minute, m=the ratio between return time to cutting time and t=machining time in minute.
a) 0.06
b) 0.03
c) 0.12
d) none of the mentioned
Answer: a
Explanation: From the formula, t= l*b* / . From this equation, we can easily calculate the value of v by putting all mentioned values.
9. If n=rpm of the bull wheel=2, l= length of the cutting stroke in mm=3mm and m= the ratio between return time to cutting time= 5. Then find the value of cutting speed in mm/minute.
a) 0.3
b) 0.36
c) 0.15
d) 0.18
Answer: b
Explanation: C.S. = n*l* / 100. Here l=3mm, n=2, m=5. So by putting these values in the above equation we can easily get the answer as 0.36.
10. If l=20, t=5, s=4, v=3 and m= 2. Find the value of b. l=length of the cutting stroke in mm, b=width of the work in mm, s=feed in mm, v=cutting speed in mm/minute, m=the ratio between return time to cutting time and t=machining time in minute.
a) 100
b) 1000
c) 10000
d) none of the mentioned
Answer: b
Explanation: From the formula, t= l*b* / . We can get the value of b by putting all mentioned values in the given equation.
Answer: a
Explanation: From the formula, t= l*b* / . We can get the value of l by putting all the values in the given equation.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Introduction to Milling”.
1. Milling machine is a machine tool that removes the metal as the work is fed against a rotating singlepoint cutter.
a) true
b) false
Answer: b
Explanation: Milling machine is a machine tool that removes the metal as the work is fed against a rotating multipoint cutter. Here, in milling machine multi point cutter should be used.
2. In milling machine, cutter rotates at high speed and removes metal at very high speed.
a) true
b) false
Answer: a
Explanation: It can be easily understood from its definition. This is the characteristic and advantage of milling cutters and that’s the reason why it is used more.
3. Milling machine can hold______ cutters at a time.
a) only one
b) only two
c) only three
d) none of the mentioned
Answer: d
Explanation: It can hold number of cutters at a time. Milling machine has multi point cutters.
4. Which of the following machine is superior to other machines as regards accuracy and better surface finish?
a) lathe
b) drill
c) shaper
d) milling
Answer: d
Explanation: Lathe, drill and shaper are general purpose machines. They are versatile while milling machine is special purpose machine.Special purpose machine are always superior to general purpose machines for a particular specific work.
5. Milling machines find wide application in production work.
a) true
b) false
Answer: a
Explanation: Milling machine is special purpose machine unlike lathe, drill and shaper. So, obviously it has higher accuracy and better performance. So it is largely used in production work for a specific purpose.
6. Which type of machining can be done by milling machine?
a) cutting keyways
b) slots and grooves
c) gears
d) all of the mentioned
Answer: d
Explanation: Cutting keyways,slots and grooves, gears all are the application of milling machine. It is a specific purpose machine..
7. Which of the following motion does a milling machine has?
a) vertical motion
b) crosswise motion
c) longitudinal motion
d) all of the mentioned
Answer: d
Explanation: Milling machine have all mentioned motions in order to perform various operation nicely. Due to this quality it has wider application and more accuracy..
8. For milling, the work is fixed on a table which controls the feed against the cutter.
a) true
b) false
Answer: a
Explanation: It can be easily seen from the working of the milling machine. Here the feed means relative movement of the tool or work.
9. Generally in workshop, column and knee type milling machine is used.
a) true
b) false
Answer: a
Explanation: This is the most general milling machine and used in workshop. It is further categorized as slab milling and face end milling.
Answer: a
Explanation: Milling machine are very versatile. Inspite of producing flat surfaces, it can also be used to dril, cut gear, bore and so on. It has wide applications.
This set of tough Machine Tools and Machining questions and answers focuses on “Milling Machine Basics”.
1. The various milling process may be classified in ______ categories.
a) 1
b) 2
c) 3
d) none of the mentioned
Answer: b
Explanation: Various milling process may be classified in 2 categories: peripheral milling and face milling.
2. Upmilling and downmilling are the subtype of ________ milling process.
a) peripheral milling
b) face milling
c) both peripheral milling and face milling
d) none of the mentioned
Answer: a
Explanation: Peripheral milling is the type of milling in which produced machine surface remains parallel to the axis of cutter.
3. Which of the following milling is known as conventional milling?
a) upmilling
b) downmilling
c) both upmilling and downmilling
d) none of the mentioned
Answer: a
Explanation: Up milling is also known as conventional milling as in this process metal is removed by cutter which rotates in the opposite direction of the travel of the work piece.
4. Which of the following process is also known as climb milling?
a) upmilling
b) downmilling
c) both upmilling and downmilling
d) none of the mentioned
Answer: b
Explanation: Down milling is also known as climb milling as in this process metal is removed by cutter which rotates in the same direction of the travel of the work piece.
5. The thickness of the chip in upmilling is _______ at the beginning of the cut.
a) minimum
b) maximum
c) zero
d) none of the mentioned
Answer: a
Explanation: As per the working of the upmilling, at the begining the the thickness of chip is minimum as cutting force vary from zero to maximum in upmilling. So intially thickness of chip is minimum.
6. The thickness of the chip in upmilling is _______ in when the cut terminates.
a) minimum
b) maximum
c) zero
d) none of the mentioned
Answer: b
Explanation: The cutting force vary from zero to maximum in up milling. At the end due to maximum force chip thickness is high.
7. The upmilling operation is not safe.
a) true
b) false
Answer: b
Explanation: This is false. The upmilling opertion is safe. This is the benefit of this process.
8. Machine vibration isn’t there in upmilling process.
a) true
b) false
Answer: b
Explanation: This is the disadvantage of this process. The upmilling is feasible.
9. The cutting force is directed _____ and this tends to lift the work from the fixture in upmilling.
a) upward
b) downward
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: This is the disadvantage of this process. The extra clamping forces may be required to fix the job on the table.
10. In upmilling, the surface milled appears to be slightly wavy.
a) true
b) false
Answer: a
Explanation: This is the disadvantage of upmilling. But its surface finish can be improved. Cutting fluid used by it is little bit complicated.
11. The cutting action can be done from both sides of the table to finish the job. This is the advantage of _____ process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This is the advantage of downmilling process. Its cutter turn are in similar direction.
12. Smooth cut can be obtained in downmilling process.
a) true
b) false
Answer: a
Explanation: Use of cutting fluid is simple. It can produce smooth cut. This is the advantage of this process.
13. More depth of cut can be used in ______milling process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This is the advantage of downmilling process. The cutting force vary from maximum to zero in this process.
Answer: a
Explanation: In downmilling, forces are enough on job to press down so no concern for clamping difficulty.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Milling Machine Basics – 2”.
1. Difficulty is experienced in pouring coolant just on the cutting edge from where the chip begins. This is the disadvantage of______ process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: This is the disadvantage of upmilling. Use of cutting fluid is difficult in upmilling.
2. The work is pulled by cutter teeth and hence the job may get spoiled or breakaway. This is the disadvantage of _____ process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This is the disadvantage of downmilling.In downmilling, job and tool movements are in same direction.
3. As the cutter progress, the chip accumulate at the cutting zone, spoils the work surfaces. This is the disadvantage of ______ process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: This is the disadvantage of upmilling. Cutter turns against the direction in which work is being fed.
4. Cutter teeth wears out soon as in the beginning itself the teeth comes in contact with the hard surface of the workpiece. This is the disadvantage of _______ process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This is the disadvantage of downmilling. Cutter turns in similar direction in which the work is being fed.
5. The burr on the surface cleans during the cutting operation. This is the advantage of _______ process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This is the advantage of downmilling. Its surface finish can be improved if it is free.
6. Upmilling is the process of removing metal by a cutter which is rotated _______ direction of the travel of the workpiece.
a) in the same
b) against the
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: As per the definition of upmilling process. This upmilling process is also known as conventional process.
7. Downmilling is the process of removing metal by a cutter which is rotated _______ direction of the travel of the workpiece.
a) in the same
b) against the
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: As per the definition of downmilling process.This downmilling process is also known as climb milling.
8. The thickness of the chip is ______ when the tooth begins its cut in downmilling.
a) maximum
b) minimum
c) zero
d) can’t say anything
Answer: a
Explanation: The cutting force vary from maximum to zero in downmilling so at the starting thickness of chip is maximum.
9. The thickness of the chip is ______ when the cut terminates in downmilling.
a) maximum
b) minimum
c) zero
d) can’t say anything
Answer: a
Explanation: From the working of downmilling, the cutting force vary from maximum to zero. So at the end thickness of chip is minimum.
10. For downmilling, _______ machines are used.
a) light
b) moderate
c) rigid
d) none of the mentioned
Answer: c
Explanation: Rigid machines are used in this process so that no clamping difficulty is there in downmilling.
11. In downmilling, the machine must have fixed on it a backlash error eliminator.
a) true
b) false
Answer: a
Explanation: As per the construction of this machine. This is done to make the forces strong enough on job to press down.
12. In downmilling, more springing actions are there in cutter.
a) true
b) false
Answer: b
Explanation: This is false. In downmilling, less springing actions are there in cutter.
13. Narrow slots can be milled in _________ milling process.
a) upmilling
b) downmilling
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This is the advantage of downmilling process. In upmilling, it is difficult to mill narrow slots.
Answer: a
Explanation: There is no clamping issue in downmilling. Use of cutting fluid is easy. Job and tool movements are in same direction. Due to this and many other advantages, downmilling is easily used on flexible, thin and flat jobs.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Column and Knee Type Milling Machine”.
1. In horizontal type universal column and knee type of milling machine, the table is placed on the knee-casting which in turn is mounted on the _____ slides of the main column.
a) horizontal
b) vertical
c) 45 degree inclined to both plans
d) none of the mentioned
Answer: b
Explanation: As per the construction of this machine. This is true for horizontal type machine. In plain and vertical type machine arrangement may be different.
2. The knee is ______ adjustable on the column in horizontal column and knee type milling machine.
a) horizontally
b) vertically
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: The knee is vertically adjustable on the column in horizontal machine so that table can move in vertical direction.
3. In this machine, the table can be moved ______
a) only up
b) only down
c) both up and down
d) none of the mentioned
Answer: c
Explanation: The table can be moved up and down to accommodate work of various heights.
4. In this horizontal column and knee type machine, cutter rotates about _____ axis.
a) horizontal
b) vertical
c) 45 degree inclined to both plans
d) none of the mentioned
Answer: a
Explanation: In this machine, cutter rotates about horizontal axis that’s the reason why it is known as horizontal column and knee type machine.
5. The column and knee type milling machines are classified according to_______
a) various methods of supplying power to table
b) different movements of table
c) different axis of rotation of spindle
d) all of the mentioned
Answer: d
Explanation: As per the classification of this machine, these are the aspects in which machine can be classified. These machines are mostly used in workshop.
6. In a universal milling machine, table of the machine may be swiveled about a vertical axis, which helps in _____ milling.
a) helical
b) cam
c) both helical and cam
d) none of the mentioned
Answer: c
Explanation: It helps in helical milling, cam milling and several other milling. This universal milling is also suitable drilling and tapping.
7. Which of following part of these machines is swivel base?
a) top
b) bottom
c) middle
d) none of the mentioned
Answer: c
Explanation: As per the construction of this machine, bottom part is swivel base on which stands the column.
8. Which part of this machine has transverse motion?
a) top
b) bottom
c) middle
d) none of the mentioned
Answer: b
Explanation: As per the construction of this machine,bottom parts has traverse motion. Bottom part can be moved toward or away from the column.
9. Which part of this machine has longitudinal motion?
a) top
b) bottom
c) middle
d) none of the mentioned
Answer: a
Explanation: The top part of this machine has longitudinal motion in the guideways machined in the swivel base.
10. Guideways are machined on the _____ of the knee.
a) top
b) middle
c) bottom
d) none of mentioned
Answer: a
Explanation: Guide ways are machined on the top of the knee. Guideways means a track or path along with something moves.
11. Which of the following part of machine is a cross slide?
a) top
b) middle
c) bottom
d) none of mentioned
Answer: c
Explanation: Bottom part of machine is a cross slide. This part can move towards or away from the column.
12. The top part of this machine is mounted on the swivel base.
a) true
b) false
Answer: a
Explanation: The top part of the machine means actual table and this table is located on the swivel base.
13. The cutter is mounted on the arbor.
a) true
b) false
Answer: a
Explanation: The cutter is mounted on the arbor with the purpose of fitting it into the spindle of the mechanism.
14. The knee is capable of being moved up and down over the guideways formed at the _____ of the column.
a) front
b) back
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: The knee is capable of being moved up and down over the guideways formed at the front of the column.This motion helps in accommodating jobs of varying heights and also giving depth of cut.
Answer: b
Explanation: The machine consists of a rigid base on which stands the column. The column houses the drive motor and speed mechanism in addition to providing support for spindle and spindle bearings.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Milling Cutters – 1”.
1. The cutting edges are spaced ______ on the circumference of the cutter.
a) equally
b) unequally
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: The cutting edges are spaced equally on the circumference of the cutter so as to provide an identical surface. If they are not spaced equally, then we can’e get a smooth surface.
2. The milling cutters are revolving tools having ______ cutting edges.
a) only one
b) only two
c) only three
d) none of mentioned
Answer: d
Explanation: It has one or several cutting edges depends upon its work.Different cutting edges are used for different purposes.
3. The cutting elements are called teeth.
a) true
b) false
Answer: a
Explanation: As per the definition of cutting elements, they can be termed as teeth which are used for the purpose of intermittent engagement.
4. The cutting elements intermittently engages ______
a) workpiece
b) remove material
c) both workpiece and remove material
d) none of the mentioned
Answer: c
Explanation: Both workpiece and removed material can intermittently engaged with the help of cutting elements through the principle of relative movements .
5. In milling cutters, intermittently engagement is done by individual motion of cutter.
a) true
b) false
Answer: b
Explanation: In milling cutters, intermittently engagement is done by relative motion of cutter and workpiece.
6. Milling cutters are broadly classified into______ types.
a) 1
b) 2
c) 3
d) none of the mentioned
Answer: b
Explanation: Milling cutters broadly classified into 2 types : arbor type and shank type.
7. Milling cutters may be made of ferrous cast alloys.
a) true
b) false
Answer: b
Explanation: Milling matters are generally not made of ferrous cast alloys. Milling cutters may be made of non-ferrous cast alloys.
8. Milling cutters may be made of______
a) high speed steel
b) cemented tipped
c) super high speed steel
d) all of the mentioned
Answer: d
Explanation: Milling cutters may be made of all mentioned. These all can give great strength ti milling cutters that’s why they are used.
9. The cutters having a bore at center are mounted and keyed on a short shaft called_____
a) arbor
b) shank
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: It is the definition of arbor and arbor is one of the famous type of milling cutter.
Answer: c
Explanation: Arbor milling is very rapid and versatile in which arbor is connected by both draw bolt and driving bolt to perform fast.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Milling Cutters – 2”
1. Slab mill cutter is an example of ______ milling cutter.
a) arbor type
b) shank type
c) special type
d) none of the mentioned
Answer: a
Explanation: Slab mill is the milling which is mainly used for the purpose of rapid machining of large and broad surfaces.
2. End mill cutter is an example of shank type milling cutter.
a) true
b) false
Answer: a
Explanation: As per the classification of milling cutters. These cutters are used in applications such as tracer milling, profile milling and plunging
3. Plain milling cutter is an example of ______ milling cutter.
a) arbor type
b) shank type
c) special type
d) none of the mentioned
Answer: c
Explanation: It is categorized under special type. Flat surfaces can be milled by this cutter. Apart from it it can perform other some simple milling operation.
4. Side milling cutter is an example of ______ milling cutter.
a) arbor type
b) shank type
c) special type
d) none of the mentioned
Answer: c
Explanation: As per the classification of milling cutters. This cutter can handle deep and long open slots in a more comfortable manner, which increase the productivity.
5. Slitting saw cutter is an example of ______ milling cutter.
a) arbor type
b) shank type
c) special type
d) none of the mentioned
Answer: c
Explanation: It is type of special purpose because it is not used for removing lots of material. It is used for the purpose of cutting a narrow slit into material.
6. Ball nose cutter is almost similar to slot drill.
a) true
b) false
Answer: a
Explanation: Both are almost similar. There is only one difference that ends of ball nose cutters are hemispherical.
7. Carbide and ceramic tips are used in ________
a) slab mill
b) face mill
c) fly mill
d) none of mentioned
Answer: b
Explanation: Face mill is the cutter which uses multiple disposable carbide and ceramic tips. These are mounted on its cutter body .
8. Form cutter is an example of arbor type milling cutter.
a) true
b) false
Answer: b
Explanation: This is false. As per the classification of milling cutters, form cutter is an example of special type milling cutter.
9. Fly cutters, which are made of a single body are replaceable with the face mills.
a) true
b) false
Answer: a
Explanation: This is the characteristic of fly cutter. They are made of a single body from which only one tool bit or two tool bits can be inserted.
Answer: 2
Explanation: This drill consists of 2 flutes. Slot drill is the drill which is able to drill straight down into the material.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Milling Indexing”.
1. The indexing is the operation of dividing the periphery of a piece of work into any number of equal parts.
a) true
b) false
Answer: a
Explanation: It is the definition of indexing.It is generally used for milling machine but it has also some application in boring,grinders, drill presses etc.
2. The indexing operation can also be adapted for producing ______ headed bolts.
a) hexagonal
b) square
c) both hexagonal and square
d) none of the mentioned
Answer: c
Explanation: The indexing operation can also be adapted for producing hexagonal and square headed bolts. It is versatility of this method and that’s the reason why it is largely used.
3. In cutting spur gear, equal spacing of teeth on the gear blank can’t be performed by indexing.
a) true
b) false
Answer: b
Explanation:In cutting spur gear, equal spacing of teeth on the gear blank can be performed by indexing.
4. Indexing is accomplished by using a special attachment known as__________
a) dividing head
b) index head
c) both dividing head and index head
d) none of the mentioned
Answer: c
Explanation: Indexing head is also known as dividing head and this driving head is also known as indexing head.
5. The dividing heads are of ____ types.
a) 1
b) 2
c) 3
d) none of the mentioned
Answer: c
Explanation: The dividing heads are of 3 types: universal driving head, optical driving head and plain driving head.
6. Which of the following is not the type of dividing heads?
a) plain dividing head
b) universal dividing head
c) optical dividing head
d) all of the mentioned
Answer: d
Explanation: All plain driving head, universal driving head and optical driving head are the types of dividing heads.
7. Which of the following dividing head is also known as simple dividing head?
a) plain dividing head
b) universal dividing head
c) optical dividing head
d) all of the mentioned
Answer: a
Explanation: Plain dividing head is also known as simple dividing head. It performs simple not too complicated tasks.
8. Which of the following is the most common type of indexing arrangement used in workshops?
a) plain dividing head
b) universal dividing head
c) optical dividing head
d) all of the mentioned
Answer: b
Explanation: As per the application of universal dividing head. It is very versatile and can perform various operation that’s why it is used in industry.
9. Universal index head can be used to execute all form of indexing.
a) true
b) false
Answer: a
Explanation: This is the advantage of this head. Due to its versatility it can perform the tasks of other indexing methods and can execute all form of indexing.
10. Which of the following is the important part of universal head?
a) worm
b) index plate
c) sector arm
d) all of the mentioned
Answer: d
Explanation: Worm, sector arm, index plate, sector arch,sector ram, crank, taper hole, spindle etc. are the main parts of universal head .
11. Which of the following has single start threads in universal dividing head?
a) worm
b) index plate
c) sector arm
d) none of the mentioned
Answer: a
Explanation: As per the construction of universal dividing head, worm has single start threads. It has to allow the spindle to pass through it during the rotation of spindle.
12. In universal dividing head, the worm wheel has 40 teeth.
a) true
b) false
Answer: a
Explanation: As per the construction of worm wheel, worm wheel has 40 teeth for the better function. Taper hole spindle passes through it.
13. The crank is used to rotate the spindle of the dividing head in universal dividing head.
a) true
b) false
Answer: a
Explanation: Crank is used for this purpose. It is the main function of the head. Spindle is passed through the worm and worm wheel arrangement.
14. Rotation of spindle is done through _______ arrangement in universal dividing head.
a) worm
b) worm wheel
c) both worm and worm wheel
d) none of the mentioned
Answer: c
Explanation: Worm and worm wheel arrangement are used for the rotation of spindle but the rotation of spindle starts because of crank arrangement.
Answer: a
Explanation: As per working of universal dividing head, continuous rotary motion can be imparted to workpiece for the purpose of helical milling.
This set of tough Machine Tools and Machining Questions focuses on “Milling Indexing Methods”.
1. Which of the following is not the method of indexing?
a) compound indexing
b) differential indexing
c) angular indexing
d) none of the mentioned
Answer: d
Explanation: All mentioned are the methods of indexing. Generally direct indexing is used but when the indexing required for numbers is beyond the the range of direct indexing, other methods are used.
2. Which of the following indexing method is also known as rapid indexing?
a) direct indexing method
b) angular indexing method
c) compound indexing method
d) none of the mentioned
Answer: a
Explanation: Direct indexing method is also known as rapid indexing method because it is more fast as compare to others.
3. Simple indexing method is also known as plain indexing method.
a) true
b) false
Answer: a
Explanation: Simple indexing method is also known as plain indexing method, which is used for the simple task.
4. Direct indexing is used when a large number of identical pieces are indexed by very large divisions.
a) true
b) false
Answer: b
Explanation: Direct indexing is used when a large number of identical pieces are indexed by very small divisions. It is generally not used when divisions are large
5. In direct indexing, the operation may be performed in_______
a) plain dividing head
b) universal dividing head
c) both plain and universal dividing head
d) none of the mentioned
Answer: c
Explanation:The operation may be performed in these both dividing head plain driving head and universal driving head.
6. When using a universal dividing head, the worm and worm wheel are first disengaged.
a) true
b) false
Answer: a
Explanation: As per the working of direct indexing, the worm and worm wheel are first disengaged. This is done in a manner similar to that used in the back gear of a lathe by turning a handle which operates an eccentric bushing.
7. The rapid index plate is generally fitted to the ______ end of the spindle nose.
a) front
b) rear
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: The required number of divisions on the work is obtained by means of the rapid index plate, which is generally fitted to the front end of the spindle nose.
8. In direct indexing, the plate has ______ equally spaced holes.
a) 12
b) 24
c) 48
d) none of the mentioned
Answer: b
Explanation: In direct indexing, the plate has twenty four equally spaced holes into any one of which a spring loaded pin is pushed to lock the spindle with the frame.
9. If n=number of divisions required, then find the number of holes to be moved in direct indexing.
a) 12/n
b) 24/n
c) 12*n
d) 24*n
Answer: b
Explanation: It is the formula for direct indexing. Various types of indexing methods are there like compound indexing, angular indexing and so on.
Answer: b
Explanation: From the formula 24/n, wher n=number of divisions required. So, by dividing 24 by 4, we can easily get 6 as an answer.
This set of Machine Tools and Machining Puzzles focuses on “Milling Cutting Tool”.
1. The cutting tool used in shaper is a _______ point cutting tool.
a) single
b) multi
c) double
d) none of the mentioned
Answer: a
Explanation: It is a single point cutting tool. For example, square nose tool, round nose tool etc. are the examples of the single point cutting tool.
2. Shaper is cutting tool having rake.
a) true
b) false
Answer: a
Explanation: Shaper is mostly used with the purpose to machine straight, flat surfaces and for that it has rake.
3. In a shaper, clearance is _______ to a lathe tool.
a) similar
b) different
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Clearance is similar to lathe tool in shaper. Also some type of angles are also similar to lathe machine.
4. Tool angles are same in shaper as in lathe.
a) true
b) false
Answer: b
Explanation: Only some type of angles are similar in both machines. Tool angles are different in the case of shaper with respect to lathe.
5. Shaper tools are______
a) quite light
b) moderate
c) much more rigid
d) none of the mentioned
Answer: c
Explanation: Shape tools are much more rigid in order to make it able to perform jobs nicely, without any slip and with more accuracy..
6. Shaper tools are heavy weighted.
a) true
b) false
Answer: a
Explanation: As per the working principle of this machine, this tools should be heavy so as to provide strength to it so that it can perform heavy jobs.
7. In shaper, tools are able to withstand shock experienced by the cutting tool at the commencement of each cutting stroke.
a) true
b) false
Answer: a
Explanation: As per the manufacturing of this machine, this machine is highly strong enough to withstand any shock.
8. The bottom side of the table of a shaper has T slots for clamping the work.
a) true
b) false
Answer: b
Explanation: The bottom side doesn’t has it, the top side of the table of a shaper has T slots for clamping the work.
9. Which of the following method is used to support the work on the table?
a) clamped in a vice
b) clamped on the table
c) both clamped in a vice and clamped on the table
d) none of the mentioned
Answer: c
Explanation: Both methods are used to support the work on the table.Both these methods provide satisfactory result.
10. Which of the following method is not used to support the work on the table?
a) clamped on the angle plate
b) clamped on a V block
c) held between shaper index centre
d) none of the mentioned
Answer: d
Explanation: All are used to support the work on the table. As per the working principle of shaper, all these methods are used for different situations and all of them provide satisfactory result.
11. Which of the following tool is not used in shaper?
a) right hand finishing tool
b) square nose tool
c) left hand side facing tool
d) none of the mentioned
Answer: d
Explanation: These all are single point cutting tools, which are highly used in shaper because of their strength..
12. Round nose tool is used in both lathe and shaper.
a) true
b) false
Answer: a
Explanation: It is used in these both machine. Generally Finishing type tools have more round nose in order to provide a better finish..
13. Gooseneck tool is used in both lathe and shaper.
a) true
b) false
Answer: a
Explanation: Groseneck tool is used in both. Nowadays, groose neck punch and grooseneck webbing stretcher is also used in both.
14. Right hand roughing tool is used in_______.
a) lathe
b) shaper
c) both lathe and shaper
d) none of the mentioned
Answer: c
Explanation: It is used in these both machines in the starting for the roughing purpose which is one of the most important operation in machine tools..
Answer: a
Explanation: As per the definition of machine tools, lathe is the most important machine tool due to its versatility. Next is drilling machine followed by shaper.
This set of Machine Tools Multiple Choice Questions & Answers focuses on “Milling Machine Operations”.
1. Shaping can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Vertical milling machines are of two types: bedmill and turrent mill and due to its construction features these vertical type milling machines can performed shaping easily.
2. surfacing can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Surfacing can be performed more effectively by vertical milling machine. This machine has a spindle. It rotates in vertical direction over the table.
3. Form cutting can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Form cutting can be performed more effectively by horizontal milling machine. The spindle in the horizontal milling machine is mounted on the horizontal arbor above table.
4. Slab milling can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Slab milling can be performed more effectively by horizontal milling machine. This slab mill is also used in gang milling.
5. Drilling can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: In vertical milling, the workpiece is held by a horizontal table and this horizontal table rotates about a vertical axis. There are none-rotating tools which can be fed by crossrail and then drilling operation is performed which is more effective in nature.
6. Boring can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: Vertical boring milling is more effectively as it has wide application in ring gear blanks, turbine casting and locomotive tires and so on.
7. Dovetailing can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: As per the classification of milling operations. Dovetailing means joint something like link together with the help of dovetail.
8. Straddle milling can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: a
Explanation: Sometimes we machine two or more vertical parallel surfaces at a single cut, this type of operation is known as straddle milling. Horizontal milling can perform it more nicely.
9. Angular milling can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: c
Explanation: Angular milling is a type of milling that mills flat surfaces which are neither parallel or perpendicular to the axis of milling cutter. It is performed more accurately by both milling machines: horizontal and vertical.
10. Cutting T-slots can be performed more effectively by ______ milling machine.
a) horizontal
b) vertical
c) can’t say anything
d) none of the mentioned
Answer: b
Explanation: This process depends upon the size of the T bolts which are going to be used and its typical milling process which can be performed by vertical milling more effectively.
Answer: c
Explanation: Slotting is the removal of material in the form of chips by a relative movement of a tool with a cutting edge relative to a workpiece along a non-circular trajectory.
