MECHANICAL ENGINEERING-TOOL AND DIE MAKER
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MECHANICAL ENGINEERING- TOOL AND DIE MAKER MCQs
1. Least count of vernier micrometer is __________. (A) 0.01 mm (B) 0.02 mm (C) 0.001 mm (D) None of these
Ans: C
2. In a double cut file, one cut is at an angle of 70 deg. What is the angle of the other cut (in degrees)? (A) 458 (B) 658 (C) 758 (D) 518
Ans: D
3. Ra value in microns for Roughness Number N4 is __________. (A) 0.2 (B) 0.1 (C) 0.05 (D) 0.25
Ans: A
4. LLL is the Roughness symbol for Roughness grade number __________. (A) N1 (B) N3 (C) N5 (D) None of the above
Ans: C
5. In assemblies, the parts are located by using taper pins. What is the taper of such pins ? (A) 1:100 (B) 1:40 (C) 1:50 (D) 1:20
Ans: C
6. Vernier micrometer have additional equally spaced vernier graduations given above the datum line. The no. of such vernier graduations are __________. (A) 5 (B) 10 (C) 25 (D) 50
Ans: B
7. Adjustable caliper gauges are used for __________. (A) Checking the accuracy of vernier calipers (B) Checking the size of a caliper (C) Checking internal diameters of parts (D) Checking external diameters of parts
Ans: D
8. The process of chemical reduction of the iron ore to pig iron is known as __________. (A) Melting (B) Refining (C) Smelting (D) Purification
Ans: C
9. The furnace used for the manufacturing of steel from pig iron is known as __________. (A) Puddling furnace (B) Blast furnace (C) Bessemer furnace (D) None of the above
Ans: C
10. Wringing is the act of joining __________ together. (A) Ring gauge (B) Slip gauge (C) Shaft and bearing (D) None of the above
Ans: B
11. Angle of counter sinking portion of centre drill is __________ degree. (A) 30 (B) 45 (C) 60 (D) 90
Ans: C
12. Shaping of a grinding wheel to make it run concentric with the axis is known as __________. (A) Dressing (B) Truing (C) Shaping (D) Balancing
Ans: B
13. Least count of vernier bevel protractor is __________. (A) 1’ (B) 5’ (C) 0.5 degree (D) 1 degree
Ans: B
14. If ‘d’ is the diameter and ‘n’ is the rpm, then cutting speed is __________. (A) πdn/1000 m/min (B) πdn/1000 cm/min (C) πdn/100 m/min (D) πdnt
Ans: A
15. Different types of errors may occur when we take measurements. Cosine error is related to which measuring instruments ? (A) Sine bar (B) Slip gauge (C) Dial test indicator (D) Vernier Caliper
Ans: C
16. The lathe beds are mostly made of __________. (A) Pig iron (B) Wrought iron (C) Grey cast iron (D) Carbon steel
Ans: C
17. Which one of the following is not a parts of a lathe ? (A) Saddle (B) Cross slide (C) Apron (D) Arbor
Ans: D
18. Conicity is __________. (A) (D−d)/2 (B) (D−d)/2 l (C) (D−d)/l (D) (D−d) L/2 l
Ans: C
19. Bell metal is an alloy of __________. (A) Zinc and Copper (B) Zinc and Aluminium (C) Nickel and Copper (D) Tin and Copper
Ans: D
20. In Indian Standard system for Limits and Fits, there are __________ grades of Fundamental tolerances.
(A) 12 (B) 16 (C) 18 (D) 25
Ans: C
21. In a plane or simple index head, one complete rotation of the index crank rotates the spindle by __________.
(A) One revolution (B) 40 revolutions
(C) 1/40 of a revolution (D) 1/4 of a revolution
Ans: C
22. __________ is the connecting rod in a crank driven press. (A) Ram (B) Clutch (C) Pitman (D) Crank
Ans: C
23. The amount of die opening at the time the angled pin contacts the core block in die casting dies is known as __________.
(A) Clearance (B) Shut height (C) Dwell (D) Day light
Ans: C
24. Which half of the die casting dies is secured to the stationary platen of the machine ?
(A) Cover half (B) Ejector half
(C) Hot chamber (D) None of the above
Ans: A
25. Which grade of grinding wheel is preferred for grinding hard metals ?
(A) Hard grade wheels (B) Soft grade wheels
(C) Open structure wheels (D) None of the above
Ans: B
26. In an electric discharge machining process, electrode is connected to __________.
(A) Anode (B) Cathode (C) Bed (D) Saddle
Ans: B
27. Clapper box are used on shaper to __________.
(A) Move the tool fast in return stroke
(B) To lift the tool in return stroke
(C) To move the tool fast in forward stroke
(D) To lift the tool in forward stroke
Ans: B
28. A 200 mm long cylindrical piece has one end dia. is 100 mm and the second dia. is 80 mm. The amount of Conicity is __________.
(A) 0.1 (B) 0.5 (C) 1.0 (D) 10
Ans: A
29. The heat treatment process for relieving internal stress after cold working in metals is known as __________.
(A) Annealing (B) Normalising (C) Tempering (D) Hardening
Ans: B
30. The hardening temperature of HSS is __________degree C.
(A) 725 (B) 850 (C) 950 (D) 1250
Ans: D
31. M code for coolant ON is __________.
(A) M05 (B) M06 (C) M08 (D) M30
Ans: C
32. This method of actuation is used when a grater split delay is required __________.
(A) Finger cam actuation (B) Dog leg cam actuation
(C) Cam track actuation (D) Spring actuation
Ans: B
33. The space between two mould halves, when the mould is opened is termed as __________.
(A) Shut height (B) Day light (C) Spacing (D) Opening
Ans: B
34. __________ is the only possible method to encapsulate delicate electronic parts.
(A) Transfer moulding (B) Compression moulding
(C) Injection moulding (D) Insert moulding
Ans: A
35. It is a process of forming hollow articles from a softened plastic tube.
(A) Injection moulding (B) Compression moulding
(C) Blow moulding (D) Extrusion moulding
Ans: C
36. The defects on a die cast component due to cold metal, slow shot, low die temperature is known as __________.
(A) Sink marks (B) Cracks (C) Cold shut (D) Wave or lake
Ans: C
37. Lead is produced from its ore __________.
(A) Bauxite (B) Malachite (C) Pirates (D) Galena
Ans: D
38. Melting point of Aluminium is __________degree C.
(A) 360 (B) 420 (C) 660 (D) 725
Ans: C
39. Non selective assembly is __________.
(A) Slow and costly (B) Rapid and costs are reduced
(C) Not suitable in mass production (D) None of the above
Ans: B
40. There are __________ Fundamental deviations in the BIS system of Limits and Fits.
(A) 12 (B) 16 (C) 18 (D) 25
Ans: D
41. Which is an interference fit ?
(A) 25H7/p6 (B) 25H7/g6 (C) 25H7/e6 (D) 25H7/b6
Ans: A
42. The fundamental deviation symbol ‘H’ is chosen for the holes, when the hole basis system is followed. This is because __________.
(A) ‘H’ is the first letter of Hole
(B) The lower deviation of the Hole ‘H’ is zero
(C) The upper deviation of the Hole ’H’ is zero
(D) The lower and upper deviation of the Hole ‘H’ is zero
Ans: B
43. The aperture of the sprue bush is tapered to facilitate __________.
(A) Easy machining (B) Easy filling of impression
(C) Easy removal of the sprue (D) Easy removal of component
Ans: C
44. In a transfer moulding, excessive flash occurred due to __________.
(A) Diameter of ejector pin too small (B) Mould not closed satisfactorily
(C) Insufficient draft (D) Inadequate venting
Ans: B
45. It is used to make continuous shapes such as tube, rods, pipes etc of thermoplastic is __________.
(A) Rotational moulding (B) Blow moulding
(C) Compression moulding (D) Extrusion moulding
Ans: D
46. Moulding shrinkage increases with __________.
(A) Increase of mould temperature (B) High injection pressure
(C) Longer injection time (D) Presence of fillers
Ans: A
47. For ejecting small cylindrical moulding __________ ejector is used.
(A) Pin ejector (B) Blade ejector
(C) D-Shaped ejector (D) Sleeve ejector
Ans: D
48. Gate that provided below the parting surface of the mould is __________.
(A) Fan gate (B) Submarine gate (C) Edge gate (D) Overlap gate
Ans: B
49. Heel blocks in moulds are also called__________.
(A) Rust buttons (B) Support blocks (C) Die block (D) Ejector plate
Ans: B
50. The __________ aligns the mould to the machine nozzle.
(A) Register ring (B) Dowel pin (C) Guide pillar (D) Sprue bush
Ans: A
Ans: C
2. In a double cut file, one cut is at an angle of 70 deg. What is the angle of the other cut (in degrees)? (A) 458 (B) 658 (C) 758 (D) 518
Ans: D
3. Ra value in microns for Roughness Number N4 is __________. (A) 0.2 (B) 0.1 (C) 0.05 (D) 0.25
Ans: A
4. LLL is the Roughness symbol for Roughness grade number __________. (A) N1 (B) N3 (C) N5 (D) None of the above
Ans: C
5. In assemblies, the parts are located by using taper pins. What is the taper of such pins ? (A) 1:100 (B) 1:40 (C) 1:50 (D) 1:20
Ans: C
6. Vernier micrometer have additional equally spaced vernier graduations given above the datum line. The no. of such vernier graduations are __________. (A) 5 (B) 10 (C) 25 (D) 50
Ans: B
7. Adjustable caliper gauges are used for __________. (A) Checking the accuracy of vernier calipers (B) Checking the size of a caliper (C) Checking internal diameters of parts (D) Checking external diameters of parts
Ans: D
8. The process of chemical reduction of the iron ore to pig iron is known as __________. (A) Melting (B) Refining (C) Smelting (D) Purification
Ans: C
9. The furnace used for the manufacturing of steel from pig iron is known as __________. (A) Puddling furnace (B) Blast furnace (C) Bessemer furnace (D) None of the above
Ans: C
10. Wringing is the act of joining __________ together. (A) Ring gauge (B) Slip gauge (C) Shaft and bearing (D) None of the above
Ans: B
11. Angle of counter sinking portion of centre drill is __________ degree. (A) 30 (B) 45 (C) 60 (D) 90
Ans: C
12. Shaping of a grinding wheel to make it run concentric with the axis is known as __________. (A) Dressing (B) Truing (C) Shaping (D) Balancing
Ans: B
13. Least count of vernier bevel protractor is __________. (A) 1’ (B) 5’ (C) 0.5 degree (D) 1 degree
Ans: B
14. If ‘d’ is the diameter and ‘n’ is the rpm, then cutting speed is __________. (A) πdn/1000 m/min (B) πdn/1000 cm/min (C) πdn/100 m/min (D) πdnt
Ans: A
15. Different types of errors may occur when we take measurements. Cosine error is related to which measuring instruments ? (A) Sine bar (B) Slip gauge (C) Dial test indicator (D) Vernier Caliper
Ans: C
16. The lathe beds are mostly made of __________. (A) Pig iron (B) Wrought iron (C) Grey cast iron (D) Carbon steel
Ans: C
17. Which one of the following is not a parts of a lathe ? (A) Saddle (B) Cross slide (C) Apron (D) Arbor
Ans: D
18. Conicity is __________. (A) (D−d)/2 (B) (D−d)/2 l (C) (D−d)/l (D) (D−d) L/2 l
Ans: C
19. Bell metal is an alloy of __________. (A) Zinc and Copper (B) Zinc and Aluminium (C) Nickel and Copper (D) Tin and Copper
Ans: D
20. In Indian Standard system for Limits and Fits, there are __________ grades of Fundamental tolerances.
(A) 12 (B) 16 (C) 18 (D) 25
Ans: C
21. In a plane or simple index head, one complete rotation of the index crank rotates the spindle by __________.
(A) One revolution (B) 40 revolutions
(C) 1/40 of a revolution (D) 1/4 of a revolution
Ans: C
22. __________ is the connecting rod in a crank driven press. (A) Ram (B) Clutch (C) Pitman (D) Crank
Ans: C
23. The amount of die opening at the time the angled pin contacts the core block in die casting dies is known as __________.
(A) Clearance (B) Shut height (C) Dwell (D) Day light
Ans: C
24. Which half of the die casting dies is secured to the stationary platen of the machine ?
(A) Cover half (B) Ejector half
(C) Hot chamber (D) None of the above
Ans: A
25. Which grade of grinding wheel is preferred for grinding hard metals ?
(A) Hard grade wheels (B) Soft grade wheels
(C) Open structure wheels (D) None of the above
Ans: B
26. In an electric discharge machining process, electrode is connected to __________.
(A) Anode (B) Cathode (C) Bed (D) Saddle
Ans: B
27. Clapper box are used on shaper to __________.
(A) Move the tool fast in return stroke
(B) To lift the tool in return stroke
(C) To move the tool fast in forward stroke
(D) To lift the tool in forward stroke
Ans: B
28. A 200 mm long cylindrical piece has one end dia. is 100 mm and the second dia. is 80 mm. The amount of Conicity is __________.
(A) 0.1 (B) 0.5 (C) 1.0 (D) 10
Ans: A
29. The heat treatment process for relieving internal stress after cold working in metals is known as __________.
(A) Annealing (B) Normalising (C) Tempering (D) Hardening
Ans: B
30. The hardening temperature of HSS is __________degree C.
(A) 725 (B) 850 (C) 950 (D) 1250
Ans: D
31. M code for coolant ON is __________.
(A) M05 (B) M06 (C) M08 (D) M30
Ans: C
32. This method of actuation is used when a grater split delay is required __________.
(A) Finger cam actuation (B) Dog leg cam actuation
(C) Cam track actuation (D) Spring actuation
Ans: B
33. The space between two mould halves, when the mould is opened is termed as __________.
(A) Shut height (B) Day light (C) Spacing (D) Opening
Ans: B
34. __________ is the only possible method to encapsulate delicate electronic parts.
(A) Transfer moulding (B) Compression moulding
(C) Injection moulding (D) Insert moulding
Ans: A
35. It is a process of forming hollow articles from a softened plastic tube.
(A) Injection moulding (B) Compression moulding
(C) Blow moulding (D) Extrusion moulding
Ans: C
36. The defects on a die cast component due to cold metal, slow shot, low die temperature is known as __________.
(A) Sink marks (B) Cracks (C) Cold shut (D) Wave or lake
Ans: C
37. Lead is produced from its ore __________.
(A) Bauxite (B) Malachite (C) Pirates (D) Galena
Ans: D
38. Melting point of Aluminium is __________degree C.
(A) 360 (B) 420 (C) 660 (D) 725
Ans: C
39. Non selective assembly is __________.
(A) Slow and costly (B) Rapid and costs are reduced
(C) Not suitable in mass production (D) None of the above
Ans: B
40. There are __________ Fundamental deviations in the BIS system of Limits and Fits.
(A) 12 (B) 16 (C) 18 (D) 25
Ans: D
41. Which is an interference fit ?
(A) 25H7/p6 (B) 25H7/g6 (C) 25H7/e6 (D) 25H7/b6
Ans: A
42. The fundamental deviation symbol ‘H’ is chosen for the holes, when the hole basis system is followed. This is because __________.
(A) ‘H’ is the first letter of Hole
(B) The lower deviation of the Hole ‘H’ is zero
(C) The upper deviation of the Hole ’H’ is zero
(D) The lower and upper deviation of the Hole ‘H’ is zero
Ans: B
43. The aperture of the sprue bush is tapered to facilitate __________.
(A) Easy machining (B) Easy filling of impression
(C) Easy removal of the sprue (D) Easy removal of component
Ans: C
44. In a transfer moulding, excessive flash occurred due to __________.
(A) Diameter of ejector pin too small (B) Mould not closed satisfactorily
(C) Insufficient draft (D) Inadequate venting
Ans: B
45. It is used to make continuous shapes such as tube, rods, pipes etc of thermoplastic is __________.
(A) Rotational moulding (B) Blow moulding
(C) Compression moulding (D) Extrusion moulding
Ans: D
46. Moulding shrinkage increases with __________.
(A) Increase of mould temperature (B) High injection pressure
(C) Longer injection time (D) Presence of fillers
Ans: A
47. For ejecting small cylindrical moulding __________ ejector is used.
(A) Pin ejector (B) Blade ejector
(C) D-Shaped ejector (D) Sleeve ejector
Ans: D
48. Gate that provided below the parting surface of the mould is __________.
(A) Fan gate (B) Submarine gate (C) Edge gate (D) Overlap gate
Ans: B
49. Heel blocks in moulds are also called__________.
(A) Rust buttons (B) Support blocks (C) Die block (D) Ejector plate
Ans: B
50. The __________ aligns the mould to the machine nozzle.
(A) Register ring (B) Dowel pin (C) Guide pillar (D) Sprue bush
Ans: A
51. Which pilot nose profile is stronger in strength and smoother in action ?
(A) Bullet nose (B) 45 deg conical stub nose
(C) 15 deg conical stub nose (D) 30 deg conical stub nose
Ans: A
52. In press tools, the __________ guide the strips in the tool.
(A) Pushers (B) Strip support
(C) Stops (D) Gauges
Ans: D
53. For faster manual feeding, which type of stoppers are preferred ?
(A) Pin stop (B) Finger stop
(C) Solid stop (D) Trigger stop
Ans: D
54. Punches that perform cutting and non-cutting operations are called __________.
(A) Floating punches (B) Hybrid punches
(C) Combination punches (D) Integrated punches
Ans: B
55. Stock materials which are fed individually into the tool for processing are called __________.
(A) Blanks (B) Single stock (C) Component (D) Unit stock
Ans: D
56. The minimum amount of land in die opening is __________.
(A) 1 mm (B) 1.5 mm
(C) 3 mm (D) Equal to sheet thickness
Ans: C
57. If the cutting clearance is optimum, cut band produced is approximately __________ the thickness of the stock material.
(A) One half of (B) One third of (C) One fourth of (D) Same as
Ans: B
58. In blanking, cutting clearance is given on __________.
(A) Punch (B) Die
(C) Both punch and die (D) Pilot
Ans: A
59. __________ may be considered as a series of shearing operations performed one after the other by the same tool.
(A) Shearing (B) Broaching (C) Trimming (D) Planishing
Ans: B
60. When any holes require two or more tools to be used __________ bushes are used ?
(A) Slip bushes (B) Liner bushes
(C) Renewable bushes (D) Special bushes
Ans: A
61. The pump used in a hydraulic power pack is __________.
(A) Gear pump (B) Centrifugal pump
(C) Piston pump (D) Vane pump
Ans: A
62. This type of jig allows the part to be machined on every surface without repositioning the part in the jig.
(A) Sandwitch jig (B) Angle plate jig (C) Box jig (D) Channel jig
Ans: C
63. __________ clamps are not used when there are chances for strong vibration.
(A) Cam action clamps (B) Screw clamps
(C) Strap clamps (D) Power clamps
Ans: A
64. Minimum angle that can be indexed in a direct indexing is 10 deg. What is the maximum number of divisions that can be indexed ?
(A) 10 (B) 12 (C) 24 (D) 36
Ans: D
65. The ability of the bond to hold abrasive grains in the grinding wheel is termed as __________.
(A) Grit (B) Grade (C) Grain (D) Structure
Ans: B
66. A 12 mm diameter end mill is to be set for a cutting speed of 14 m/min. The rpm to be set on the machine should be __________.
(A) 271.7 (B) 183.17 (C) 76 (D) 371.21
Ans: D
67. A blanked component weights 450 gms and is made from 1.5 mm thick plate material and whose weight per sq.cm is 1.7 gms. What is the blank diameter ? (A) 19.54 cm (B) 18.36 cm (C) 16.46 cm (D) 15 cm
Ans: B
68. When cutting and non-cutting operations takes place in a single station, it is called __________.
(A) Combination tool (B) Progressive tool
(C) Compound tool (D) Assembly tool
Ans: A
69. A small edge radius in blanked component is the result of cutting clearance is __________.
(A) Sufficient (B) Insufficient (C) Excessive (D) Optimum
Ans: B
70. The burr side of a blank is always towards the __________.
(A) Punch side (B) Die side
(C) Both (A) and (B) (D) None of these
Ans: A
71. Double action presses are mainly used for __________. (A) Drawing (B) Piercing (C) Blanking (D) Lancing
Ans: A
72. The locating system should be such that it would be difficult for the operator to load the workpiece incorrectly in a fixture. This is known as __________. (A) Aligning (B) Locating (C) Clamping (D) Fool proofing
Ans: D
73. The operation of separating the stock material along a straight line in a double cut is called __________. (A) Cutting off (B) Trimming (C) Notching (D) Parting off
Ans: D
74. Screws and dowel holes drilled should be away from the edge and opening of the die by __________, if the diameter of the screw and dowel is d. (A) 1.5d (B) 2.5d (C) 0.5d (D) 0.75d
Ans: A
75. Pantograph die-sinking and engraving machine operates on the principle of __________. (A) Gang milling (B) Shaping (C) Planing (D) Copy milling
Ans: D
76. Punches located and positioned by punch holders are known as __________. (A) Integrated punches (B) Segregated punches (C) Hybrid punches (D) Cutting punches
Ans: A
77. The exact position in which the stock strip must be positioned in order to obtain dimensionally correct component is __________. (A) Registry position (B) Stop position (C) Finger stop position (D) None of the above
Ans: A
78. When it is necessary to clamp the strip in addition to its stopping function __________ is used ? (A) Travelling stripper (B) Fixed stripper (C) Box stripper (D) None of the above
Ans: A
79. Bulge clearance is provided in the __________. (A) Die plate (B) Stripper plate (C) Front gauge (D) Back gauge
Ans: D
80. Nesting gauges are used whenever __________.
(A) Progressive tool is used (B) Compound tool is used
(C) Stock strip is fed into the tool (D) Unit stock is fed into the tool
Ans: D
81. While bending, the neutral plane lies approximately at a distance of __________.
(A) 0.3t to 0.5t from the inner surface
(B) 0.3t to 0.5t from the outer surface
(C) 0.5t to 0.6t from the inner surface
(D) 0.4t from the outer surface
Ans: A
82. All bends are distorted like forming. This distortion is called __________.
(A) Elastic deformation (B) Plastic deformation
(C) Shearing (D) Planishing
Ans: B
83. If the blank diameter is ‘D’ and cup or shell diameter is ‘d’, then coefficient of drawing K = __________.
(A) D−d (B) D−d/2 (C) d/D (D) D/d
Ans: D
84. The clearance between the walls of the drawing punch and the die should be __________.
(A) Same as the thickness of the metal
(B) Less than the thickness of the metal
(C) Greater than the thickness of the metal
(D) Double the thickness of the metal
Ans: B
85. A smaller bend radius results __________.
(A) No spring back (B) Heavier spring back
(C) Weaker spring back (D) No change in spring back
Ans: C
86. Why metal rupture or bottom break off in drawing ?
(A) Blank holding pressure is too high
(B) Blank holding pressure is too weak
(C) Clearance is more
(D) Wrong blank dimension
Ans: A
87. Tool makes buttons are in corporate with :
(A) Accurate locating (B) Precision turning
(C) Precision boring (D) Accurate clamping
Ans: C
88. __________ is basically a method of blanking or piercing parts without die break.
(A) Shaving (B) Broaching (C) Piercing (D) Fine blanking
Ans: D
89. Maximum number of dowels used for positioning is __________.
(A) 1 (B) 3 (C) 2 (D) 4
Ans: C
90. In drawing operation, more than one reduction will be necessary if the ratio of height of cup ‘h’ to the diameter of the cup ‘d’ (h/d) exceeds a value of __________.
(A) 0.75 (B) 1.0 (C) 2.0 (D) 2.25
Ans: A
91. The maximum number of locating points in one plane should be __________ in order to prevent rocking.
(A) 2 (B) 3 (C) 4 (D) 5
Ans: B
92. When the punch does not ‘bottom out’, the bending process are referred to as __________.
(A) V bending (B) U bending (C) Air bending (D) Wiping
Ans: C
93. Spring back can be prevented in wiping dies by __________.
(A) Over bending the material (B) Ironing the material
(C) Heating the material (D) None of the above
Ans: B
94. Bending along a curved axis is termed as :
(A) U bending (B) Curved bending
(C) Drawing (D) Forming
Ans: D
95. If the load is heavy and end feeding is required, __________ die set is used.
(A) Diagonal pin type (B) Four pillar type
(C) Center pin type (D) Back pin type
Ans: A
96. __________ causes the metal to begin flowing plastically. (A) Die radius (B) Punch radius (C) Pressure pad (D) Draw ring
Ans: D
(A) Bullet nose (B) 45 deg conical stub nose
(C) 15 deg conical stub nose (D) 30 deg conical stub nose
Ans: A
52. In press tools, the __________ guide the strips in the tool.
(A) Pushers (B) Strip support
(C) Stops (D) Gauges
Ans: D
53. For faster manual feeding, which type of stoppers are preferred ?
(A) Pin stop (B) Finger stop
(C) Solid stop (D) Trigger stop
Ans: D
54. Punches that perform cutting and non-cutting operations are called __________.
(A) Floating punches (B) Hybrid punches
(C) Combination punches (D) Integrated punches
Ans: B
55. Stock materials which are fed individually into the tool for processing are called __________.
(A) Blanks (B) Single stock (C) Component (D) Unit stock
Ans: D
56. The minimum amount of land in die opening is __________.
(A) 1 mm (B) 1.5 mm
(C) 3 mm (D) Equal to sheet thickness
Ans: C
57. If the cutting clearance is optimum, cut band produced is approximately __________ the thickness of the stock material.
(A) One half of (B) One third of (C) One fourth of (D) Same as
Ans: B
58. In blanking, cutting clearance is given on __________.
(A) Punch (B) Die
(C) Both punch and die (D) Pilot
Ans: A
59. __________ may be considered as a series of shearing operations performed one after the other by the same tool.
(A) Shearing (B) Broaching (C) Trimming (D) Planishing
Ans: B
60. When any holes require two or more tools to be used __________ bushes are used ?
(A) Slip bushes (B) Liner bushes
(C) Renewable bushes (D) Special bushes
Ans: A
61. The pump used in a hydraulic power pack is __________.
(A) Gear pump (B) Centrifugal pump
(C) Piston pump (D) Vane pump
Ans: A
62. This type of jig allows the part to be machined on every surface without repositioning the part in the jig.
(A) Sandwitch jig (B) Angle plate jig (C) Box jig (D) Channel jig
Ans: C
63. __________ clamps are not used when there are chances for strong vibration.
(A) Cam action clamps (B) Screw clamps
(C) Strap clamps (D) Power clamps
Ans: A
64. Minimum angle that can be indexed in a direct indexing is 10 deg. What is the maximum number of divisions that can be indexed ?
(A) 10 (B) 12 (C) 24 (D) 36
Ans: D
65. The ability of the bond to hold abrasive grains in the grinding wheel is termed as __________.
(A) Grit (B) Grade (C) Grain (D) Structure
Ans: B
66. A 12 mm diameter end mill is to be set for a cutting speed of 14 m/min. The rpm to be set on the machine should be __________.
(A) 271.7 (B) 183.17 (C) 76 (D) 371.21
Ans: D
67. A blanked component weights 450 gms and is made from 1.5 mm thick plate material and whose weight per sq.cm is 1.7 gms. What is the blank diameter ? (A) 19.54 cm (B) 18.36 cm (C) 16.46 cm (D) 15 cm
Ans: B
68. When cutting and non-cutting operations takes place in a single station, it is called __________.
(A) Combination tool (B) Progressive tool
(C) Compound tool (D) Assembly tool
Ans: A
69. A small edge radius in blanked component is the result of cutting clearance is __________.
(A) Sufficient (B) Insufficient (C) Excessive (D) Optimum
Ans: B
70. The burr side of a blank is always towards the __________.
(A) Punch side (B) Die side
(C) Both (A) and (B) (D) None of these
Ans: A
71. Double action presses are mainly used for __________. (A) Drawing (B) Piercing (C) Blanking (D) Lancing
Ans: A
72. The locating system should be such that it would be difficult for the operator to load the workpiece incorrectly in a fixture. This is known as __________. (A) Aligning (B) Locating (C) Clamping (D) Fool proofing
Ans: D
73. The operation of separating the stock material along a straight line in a double cut is called __________. (A) Cutting off (B) Trimming (C) Notching (D) Parting off
Ans: D
74. Screws and dowel holes drilled should be away from the edge and opening of the die by __________, if the diameter of the screw and dowel is d. (A) 1.5d (B) 2.5d (C) 0.5d (D) 0.75d
Ans: A
75. Pantograph die-sinking and engraving machine operates on the principle of __________. (A) Gang milling (B) Shaping (C) Planing (D) Copy milling
Ans: D
76. Punches located and positioned by punch holders are known as __________. (A) Integrated punches (B) Segregated punches (C) Hybrid punches (D) Cutting punches
Ans: A
77. The exact position in which the stock strip must be positioned in order to obtain dimensionally correct component is __________. (A) Registry position (B) Stop position (C) Finger stop position (D) None of the above
Ans: A
78. When it is necessary to clamp the strip in addition to its stopping function __________ is used ? (A) Travelling stripper (B) Fixed stripper (C) Box stripper (D) None of the above
Ans: A
79. Bulge clearance is provided in the __________. (A) Die plate (B) Stripper plate (C) Front gauge (D) Back gauge
Ans: D
80. Nesting gauges are used whenever __________.
(A) Progressive tool is used (B) Compound tool is used
(C) Stock strip is fed into the tool (D) Unit stock is fed into the tool
Ans: D
81. While bending, the neutral plane lies approximately at a distance of __________.
(A) 0.3t to 0.5t from the inner surface
(B) 0.3t to 0.5t from the outer surface
(C) 0.5t to 0.6t from the inner surface
(D) 0.4t from the outer surface
Ans: A
82. All bends are distorted like forming. This distortion is called __________.
(A) Elastic deformation (B) Plastic deformation
(C) Shearing (D) Planishing
Ans: B
83. If the blank diameter is ‘D’ and cup or shell diameter is ‘d’, then coefficient of drawing K = __________.
(A) D−d (B) D−d/2 (C) d/D (D) D/d
Ans: D
84. The clearance between the walls of the drawing punch and the die should be __________.
(A) Same as the thickness of the metal
(B) Less than the thickness of the metal
(C) Greater than the thickness of the metal
(D) Double the thickness of the metal
Ans: B
85. A smaller bend radius results __________.
(A) No spring back (B) Heavier spring back
(C) Weaker spring back (D) No change in spring back
Ans: C
86. Why metal rupture or bottom break off in drawing ?
(A) Blank holding pressure is too high
(B) Blank holding pressure is too weak
(C) Clearance is more
(D) Wrong blank dimension
Ans: A
87. Tool makes buttons are in corporate with :
(A) Accurate locating (B) Precision turning
(C) Precision boring (D) Accurate clamping
Ans: C
88. __________ is basically a method of blanking or piercing parts without die break.
(A) Shaving (B) Broaching (C) Piercing (D) Fine blanking
Ans: D
89. Maximum number of dowels used for positioning is __________.
(A) 1 (B) 3 (C) 2 (D) 4
Ans: C
90. In drawing operation, more than one reduction will be necessary if the ratio of height of cup ‘h’ to the diameter of the cup ‘d’ (h/d) exceeds a value of __________.
(A) 0.75 (B) 1.0 (C) 2.0 (D) 2.25
Ans: A
91. The maximum number of locating points in one plane should be __________ in order to prevent rocking.
(A) 2 (B) 3 (C) 4 (D) 5
Ans: B
92. When the punch does not ‘bottom out’, the bending process are referred to as __________.
(A) V bending (B) U bending (C) Air bending (D) Wiping
Ans: C
93. Spring back can be prevented in wiping dies by __________.
(A) Over bending the material (B) Ironing the material
(C) Heating the material (D) None of the above
Ans: B
94. Bending along a curved axis is termed as :
(A) U bending (B) Curved bending
(C) Drawing (D) Forming
Ans: D
95. If the load is heavy and end feeding is required, __________ die set is used.
(A) Diagonal pin type (B) Four pillar type
(C) Center pin type (D) Back pin type
Ans: A
96. __________ causes the metal to begin flowing plastically. (A) Die radius (B) Punch radius (C) Pressure pad (D) Draw ring
Ans: D