Machine Tools Multiple Choice Questions on “Manufacturing Process”.
1. Which manufacturing process includes the powder metallurgy?
a) casting
b) forming and shaping
c) machining
d) joining
Answer: b
Clarification: 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
Clarification: 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
Clarification: 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
Clarification: 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
Clarification: 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
Clarification: 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
Clarification: 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( mentioned ) are included in finishing process.
8. Machining process deals with drawing.
a) true
b) false
Answer: b
Clarification: 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
Clarification: 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
Clarification: 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
Clarification: 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
Clarification: 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.
13. In ____type of manufacturing process, material is wasted. It is in the form of chips.
a) machining process
b) casting process
c) joining process
d) forming and shaping process
Answer: a
Clarification: In machining process, some raw material is wasted in or in order to perform different operations like drilling, turning etc.
14. A desired speed of _____ can be obtained by selecting the suitable change gears havingproper number of teeth.
A. Lead screw
B. Countershaft
C. Spindle
D. Feed gear box
Answer: A.Lead screw
15. The Lathe carriage serves the following purpose of the tool
A. Guiding
B. Feeding
C. Supporting
D. All of the above
Answer: D.All of the above
16. The following is also known as Tool rest
A. Saddle
B. Cross slide
C. Compound rest
D. Tool post
Answer: C.Compound rest
17. The following is used in Magnetic chucks
A. Electromagnet
B. Permanent magnet
C. Both ‘A’ and ‘B’
D. None of the above
Answer: C.Both ‘A’ and ‘B’
18. The following is used for holding bored parts for machining their outside surfaces onLathe.
A. Mandrel
B. Dogs
C. Driving plate
D. Angle plate
Answer: A.Mandrel
19. The following is used to turn very long job between centers on a lathe.
A. Steady rest
B. Follower rest
C. Compound rest
D. All of the above
Answer: A.Steady rest
20. The following is used to support too flexible job very close to the cutting edge.
A. Steady rest
B. Follower rest
C. Compound rest
D. All of the above
Answer: B.Follower rest
21. Which of the following attachments can be used on Centre lathe?
A. Grinding
B. Milling
C. Copying
D. All of the above
Answer: D.All of the above
22. For correct setting for turning operation in a lathe machine, the tool nose should touch the workpiece _____ horizontal line which is parallel to and at the same level as the axis of correctly centred workpiece.
A. Exactly on a
B. Above the
C. Below the
D. Any of the above
Answer: A.Exactly on a
23. The following is taper turning method on lathe
A. Tail stock set-over method
B. By swivelling the compound rest
C. Using a broad nose tool
D. All of the above
Answer: D.All of the above
24. External threads can be produced by means of
A. Taps
B. Dies
C. Lathe machine
D. All of the above
Answer: D.All of the above
25. The axial advancement in one rotation of the screwed part is known as ____ of the threads.
A. Pitch
B. Lead
C. Pitch diameter
D. Helix
Answer: B.Lead
26. To cut a screw of 3mm pitch on Lathe machine having same speeds of spindle and lead screw, the tool should move, parallel to the axis of the work, a distance of ____ for every revolution of the spindle.
A. 1.5 mm
B. 3 mm
C. 4.5 mm
D. 6 mm
Answer: B.3 mm
27. In cutting Right hand threads, the spindle and lead screw rotates in the
A. Same direction
B. Opposite direction
C. Same or Opposite direction
D. Spindle rotates but lead screw does not rotate
Answer: A.Same direction
28. In lathe, form tools are used to produce
A. Cylindrical surfaces
B. Tapered surfaces
C. The surfaces which are neither cylindrical nor tapered
D. Threads
Answer: C.The surfaces which are neither cylindrical nor tapered
chapter: Drilling Machines
29. 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.none of the mentioned
30. 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.by special attachments
31. 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.none of the mentioned
32. We can’t perform grinding operation in a drilling machine.
A. true
B. false
C. none
D. all
Answer: B.false
33. 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.none of the mentioned
34. In drilling operation, work should be held by hand.
A. true
B. false
C. none
D. all
Answer: B.false
35. The drilling machine is the second most important machine tool in a workshop.
A. true
B. false
C. none
D. all
Answer: A.true
36. 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.none of the mentioned
37. For drilling operation, the drill rotates with_____ pressure if job is held on earth.
A. upward
B. downward
C. 45 degree inclined to both planes
D. none of the mentioned
Answer: B.downward
chapter: Boring Machine
38. 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.none of the mentioned
39. What does the boring mean?
A. a process of making a hole in an object
B. a process of enlarging a hole which is already in an object
C. a process of finishing an existing hole very smoothly and accurately in size
D. none of the above
Answer: A.a process of making a hole in an object
40. Which operation can correct hole location, size or alignment of the hole which is already drilled in workpiece?
A. Boring
B. Rimming
C. Both a. and b
D. None of the above
Answer: A.Boring
41. Which drilling machine is used to perform drilling operation on the workpieces which are too heavy and also maybe too large to mount on worktable?
A. Portable drilling machine
B. Sensitive drilling machine
C. Radial drilling machine
D. none of the above
Answer: C.Radial drilling machine
42. The effect of setting a boring tool above center height leads to
A. Increase in the effective rake angle and a decrease in the effective clearance angle
B. Increase in both effective rake angle and effective clearance angle
C. Decrease in the effective rake angle and an increase in the effective clearance angle
D. Decrease in both effective rake angle and effective clearance angle
Answer: A.Increase in the effective rake angle and a decrease in the effective clearance angle
43. In which of the following machine, the work rotates and the tool is stationary?
A. Vertical boring machine
B. Horizontal boring machine
C. Precision boring machine
D. Jig boring machine
Answer: A.Vertical boring machine
44. The process of chamfering the entrance of a drilled hole is known as_____
A. counter-boring
B. counter-sinking
C. counter-fillet
D. trepanning
Answer: B.counter-sinking
45. On drilling machine, which process is known as reaming?
A. Enlargement of existing hole
B. Hole made by removal of metal along the hole circumference
C. Smoothly finishing and accurately sizing a drilled hole
D. All of the above
Answer: C.Smoothly finishing and accurately sizing a drilled hole
chapter: Milling Machines
46. During milling, the cutter usually moves
A. Perpendicular to its axis
B. Parallel to its axis
C. Inclined to its axis
D. Any of the above
Answer: A.Perpendicular to its axis
47. The speed at which the piece advances through the cutter is called
A. Cutting speed
B. Feed rate
C. Depth of cut
D. None of the above
Answer: B.Feed rate
48. In _____, the cutting action occurs primarily at the end corners of the milling cutter.
A. Face milling
B. Peripheral milling
C. Both (A) and (B)
D. None of the above
Answer: A.Face milling
49. Peripheral milling is well suited to the cutting of
A. Deep slots
B. Threads
C. Gear teeth
D. All of the above
Answer: D.All of the above
50. A milling cutter may have surfaces made of
A. High speed steel
B. Cemented carbide
C. Aluminium oxide
D. Both (A) and (B)
Answer: A.High speed steel
51. The use of coatings on milling cutters will increase the ____ of the tool.
A. Surface hardness
B. Corrosion resistance
C. Surface finish
D. Melting point
Answer: D.Melting point
52. Following coating(s) is (are) for milling cutters
A. Titanium nitride (TiN)
B. Titanium Carbonitride (TiCN)
C. Aluminium Titanium Nitride (AlTiN)
D. All of the above
Answer: B.Titanium Carbonitride (TiCN)
53. Gang milling refers to the use of two or more milling cutters mounted on the ____ arbor in a____ milling set up.
A. Same, vertical
B. Same, horizontal
C. Different, vertical
D. Different, horizontal
Answer: A.Same, vertical
54. Following is (are) the type(s) of vertical mill
A. Bed mill
B. Turret mill
C. Both (A) and (B)
D. None of the above
Answer: D.None of the above
55. A turret mill has a ____ spindle and the table is moved ____ to the spindle axis to accomplishcutting.
A. Stationary, perpendicular
B. Moving, parallel
C. Stationary, both perpendicular and parallel
D. Moving, perpendicular
Answer: C.Stationary, both perpendicular and parallel
56. In the bed mill, the table moves ____ to the spindle’s axis
A. Only parallel
B. Only perpendicular
C. Both perpendicular and parallel
D. Inclined
Answer: B.Only perpendicular
57. Following milling machine is used to cut gears
A. Horizontal milling machine
B. Vertical milling machine
C. Both (A) and (B)
D. None of the above
Answer: A.Horizontal milling machine
58. Following type of gear(s) can be cut on milling machine
A. Worm
B. Spiral bevel
C. Spur
D. All of the above
Answer: D.All of the above
59. Jig borer are
A. Built to bore holes
B. Very light slot or face milling
C. Typically bed mills with a long spindle throw
D. All of the above
Answer: D.All of the above
60. Most CNC milling machines are
A. Computer controlled vertical mills
B. Used in diesinking
C. Used in engraving applications
D. All of the above
Answer: D.All of the above
61. Pocket milling is extensively used in
A. Aerospace industry
B. Shipyard industry
C. Both (A) and (B)
D. Agriculture industry
Answer: C.Both (A) and (B)
62. In end mill cutter, flutes of the milling bit are
A. Deep helical grooves running up the cutter
B. Sharp blade along the edge
C. Holes
D. None of the above
Answer: A.Deep helical grooves running up the cutter
63. In end mill cutter, chips are pulled up the
A. Flute
B. Tooth
C. Tip
D. Shank
Answer: A.Flute
64. End mills have cutting teeth
A. At one end
B. On the sides
C. Both (A) and (B)
D. None of the above
Answer: C.Both (A) and (B)
chapter:
Planers, Shapers and Slotters
65. Reciprocation of the cutting tool in shaping machines is accomplished by.
A. Rack pinion mechanism
B. Crank and connecting rod mechanism
C. Cam and cam follower mechanism
D. Oscillating lever mechanism
Answer: A.Rack pinion mechanism
66. Internal keyway in gears can be cut in
A. Shaping machine
B. Planning machine
C. Slotting machine
D. None of the above
Answer: C.Slotting machine
67. The job reciprocates in
A. Shaping machine
B. Planning machine
C. slotting machine
D. All of the above
Answer: D.All of the above
68. The T-slots in the table of planning machines are cut in.
A. Shaping machine
B. Planning machine
C. Slotting machine
D. None of these
Answer: D.None of these
69. Flat surface can be produced in
A. Shaping machine only
B. Planning machine only
C. Slotting machine only
D. All of the above
Answer: D.All of the above
70. Large number of cutting tools can be simultaneously used in.
A. Shaping machine
B. Planning machine
C. Slotting machine
D. None of these
Answer: D.None of these
71. Heavy cuts can be given during machining in
A. Shaping machine
B. Planning machine
C. Slotting machine
D. None of these
Answer: C.Slotting machine
72. Slotting machines are used to cut internal gear teeth for
A. Batch production
B. Lot production
C. Mass production
D. None of these
Answer: C.Mass production
73. The work-table can rotate in
A. Shaping machine
B. Planning machine
C. Slotting machine
D. None of these
Answer: C.Slotting machine
74. Length of the stroke can be varied in
A. Shaping machine
B. Planning machine
C. Slotting machine
D. All of these
Answer: D.All of these
chapter:
Sawing and Broaching Machines
75. What is broaching?
A. A machining process used for increasing the size of the existing hole
B. A machining process used for grinding hardened steel
C. A machining process used for making intricate holes accurately
D. A machining process for removal of a layer of material of desired width and depth
Answer: D.A machining process for removal of a layer of material of desired width and depth
76. What is the main advantage of broaching over shaping process?
A. Use of single point cutting tool which are inexpensive and can be grounded to any shape
B. Thin or fragile jobs can be conveniently machined because of lower cutting forces
C. Surfaces with obstruction can also be machined
D. Removal of the whole material in one stroke
Answer: D.Removal of the whole material in one stroke
77. For which of the following operations, broaching can be used?
A. Threading
B. Grinding
C. Spline cutting
D. Increasing the size of the existing hole for a certain length
Answer: C.Spline cutting
78. Why push type broaches are made shorter in length?
A. To reduce machining time
B. To increase the efficiency
C. For easy handling of the tool
D. To avoid buckling
Answer: D.To avoid buckling
79. Why chip breakers are provided on the broach?
A. To reduce machining time.
B. To increase the cutting force by breaking the chips
C. To reduce the friction between tool surface and the workpiece by breaking the chips
D. To break up the wide curling chips
Answer: D.To break up the wide curling chips
80. Why neck section provided in the pull type broaches are made shorter in diameter?
A. To provide better surface finish
B. To remove chips easily
C. To allow failure in case of overloading
D. For holding purpose
Answer: C.To allow failure in case of overloading
81. In broaching, generally the broach remains fixed and the workpiece travels providing cutting velocity.
A. True
B. False
C. none
D. all
Answer: B.False
82. How many types of broaches are there?
A. 3
B. 5
C. 8
D. 9
Answer: D.9
83. Which of the following broaches are re-sharpened by grinding at rake faces?
A. Form relieved type
B. Modular type
C. Profile sharpened type
D. Sectional type
Answer: A.Form relieved type
84. Which of the following type of broaches are sharpened or re-sharpened by grinding at theflank surfaces?
A. Profile sharpened type
B. Sectional type
C. Segmented type
D. Ordinary cut type
Answer: A.Profile sharpened type
chapter:
Grinding Machines and Abrasives
85. Following is an abrasive cutting
A. Milling
B. Grinding
C. Laser beam machining
D. All of the above
Answer: B.Grinding
86. Grinding is best suited to the machining of
A. Soft material
B. Very hard material
C. Both (A) and (B)
D. None of the above
Answer: B.Very hard material
87. Following process (es) is (are) subset(s) of grinding
A. Honing
B. Lapping
C. Sanding
D. All of the above
Answer: D.All of the above
88. The work holding device in surface grinding is known as
A. Chuck
B. Mandrel
C. Tool post
D. None of the above
Answer: A.Chuck
89. Grinding is commonly used on
A. Aluminium
B. Brass
C. Plastic
D. Cast Iron
Answer: D.Cast Iron
90. Which of the following material(s) tend to clog the cutting wheel
A. Aluminium
B. Brass
C. Plastic
D. All of the above
Answer: D.All of the above
91. Following is (are) the type of cylindrical grinding
A. Outside diameter grinding
B. Plunge grinding
C. Centerless grinding
D. All of the above
Answer: D.All of the above
92. In cylindrical grinder, how many centers hold the workpiece?
A. One
B. Two
C. Three
D. Four
Answer: B.Two
93. Most cylindrical grinding machines include a ___ to allow the forming of tapered piece.
A. Grinding dog
B. Swivel
C. Center driver
D. None of the above
Answer: B.Swivel
94. In cylindrical grinding, the abrasive wheel and the workpiece are
A. Rotated by separate motors and at different speeds.
B. Rotated by separate motors and at same speed.
C. Rotated by single motor and at same speed.
D. Any of the above
Answer: A.Rotated by separate motors and at different speeds.
95. In which of the grinding methods, rate of material removal is high?
A. Surface grinding
B. Cylindrical grinding
C. Creep feed grinding
D. All of the above
Answer: C.Creep feed grinding
96. In which of the following grinding methods, grinding wheel never need dressing
A. High efficiency deep grinding
B. Continuous dress creep feed grinding
C. Surface grinding
D. All of the above
Answer: A.High efficiency deep grinding
97. In centerless grinding, workpiece is supported by
A. Centers
B. Chuck
C. Work rest
D. All of the above
Answer: C.Work rest
98. Following is a type of centerless grinding
A. Through feed grinding
B. In feed grinding
C. Internal centerless grinding
D. All of the above
Answer: D.All of the above
99. In electrochemical grinding, grinding wheel is
A. Positively charged
B. Negatively charged
C. Grounded
D. Any of the above
Answer: B.Negatively charged
100. In electrochemical grinding, the pieces from the workpiece
A. Are dissolved into the conductive fluid
B. Melts and vaporizes
C. Flushed out
D. None of the above
Answer: A.Are dissolved into the conductive fluid
101. Following cutting fluid is used for grinding of Cast iron
A. Heavy duty emulsifiable oil
B. Light duty chemical oil
C. Synthetic oil
D. All of the above
Answer: D.All of the above
102. Stainless steel is very difficult to grind due to its
A. Toughness
B. Ability to work harden
C. Both (A) and (B)
D. None of the above
Answer: C.Both (A) and (B)
103. Which of the following property changes due to grinding
A. Mechanical properties
B. Physical properties
C. Chemical properties
D. All of the above
Answer: D.All of the above
104. Synthetic oil is used as cutting fluid in grinding for
A. Cast iron
B. Stainless steel
C. Plastics
D. All of the above
Answer: D.All of the above
105. In which operation, motion of job is rotary and motion of cutting tool is forwardtranslating?
A. turning
B. planning
C. milling
D. all of the mentioned
Answer: A.turning
106. Which type of job motion is there in drilling operation?
A. rotary
B. translating
C. fixed
D. none of the mentioned
Answer: C.fixed
107. 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.boring and drilling
108. 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.drilling
109. In drilling motion of job is rotary.
A. true
B. false
C. none
D. all
Answer: B.false
110. 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.both milling utter and broaching tool
111. In how many groups, cutting tools can be divided?
A. 2
B. 3
C. 4
D. none of the mentioned
Answer: A.2
112. In how many groups, various metal working processes can be classified?
A. 2
B. 3
C. 4
D. none of the mentioned
Answer: A.2
chapter: Metal Cutting Lathes
113. In lathe work, when the tool is fed parallel to the rotation of job work, it will produce
A. Cylindrical surface
B. Spherical surface
C. Tapered surface
D. All of the above
Answer: A.Cylindrical surface
114. The following type of Lathe is operated through Cams and Cam plate.
A. Precision Lathe
B. Crankshaft Lathe
C. Screw cutting Lathe (Automatic)
D. Duplicating Lathe
Answer: C.Screw cutting Lathe (Automatic)
115. The following part of Lathe serves as housing for the driving pulleys and back gears
A. Head stock
B. Tail stock
C. Bed
D. Carriage
Answer: A.Head stock
116. In Lathe, the back gears are used for affecting _______ in spindle speeds, therebyfacilitating wider range of speeds
A. Increase
B. Reduction
C. Increase or reduction
D. None of the above
Answer: B.Reduction
117. The following acts as driving shaft in Lathe.
A. Countershaft
B. Spindle shaft
C. Lead screw
D. None of the above
Answer: A.Countershaft