a. Pillar file
b. Square file
c. Dread naught file
d. Swiss pattern file
2. Why slots are provided in the slotted castle nuts?
a. To fix split pins
b. For good appearance
c. Reduce the weight of nut
d. For easy removal and fitment
3. which gauge is used to check the gap between the mating parts?
a. Slip gauge
b. Plug gauge
c. Feeler gauge
d. Radius gauge
4. Which material is used to clean the slip gauge?
a. Wax
b. Kerosene
c. Soluble oil
d. Carbon tetra chloride
5. Which material is to wash off the lapping plate after charging?
a. Oil
b. Kerosene
c. Coolant oil
d. Petroleum jelly
6. Which material is used to protect slip gauge from rust?
a. Oil
b. Wax
c. Kerosene
d. Petroleum jelly
7. What finishing process have a high degree of dimensional accuaracy?
a. Filing
b. Turning
c. Grinding
d. Lapping
8. Which is the abrasive used for lapping soft steel and non- ferrous metals?
a. Silicon carbide
b. Diamond
c. Boron carbide
d. Fused alumina
9. Why grooves are provided on the surface of the lapping plate?
a. To allow expansion
b. To provide clearance
c. To retain the abrasive
d. To permit minor adjustment
10. What is the name of the heat treatment process for reheating the hardened steel to a temperature below 400` C followed by cooling?
a. Annealing
b. Hardening
c. Tempering
d. Normalizing
11. Why the tempering process carried out in steel?
a. To add cutting ability
b. To relive strain and stress
c. To refine the grain structure
d. To regulate the hardness and toughness
12. What is the purpose of annealing in steel?
a. To add cutting ability
b. To increase wear resistance
c. To relieve the internal stress
d. To refine the grain structure of the steel
13. What is the purpose of key?
a. To transmit torque
b. Assembly purpose
c. Lock the assembly part
d. Permit clearance between mating part
14. What is the ration of key way taper?
a. 01:19:00
b. 01:20:00
c. 01:50:00
d. 1:100
15. Which types of metal screw useful for self tapping on hard or brittle materials?
a. Self piercing
b. Thread cutting
c. Thread forming
d. Hammer driven screw
16. What is the advantage of wing nut?
a. In coach building work
b. Heavy duty assembly work
c. Loosen and tighten without wrench
d. Provide decorative appearance
17. Which gauge is used to check the accuracy of an external thread?
a. Snap gauge
b. Thread ring gauge
c. Thread plug gauge
d. Centre gauge
18. How many set of feeler gauges are available as per BIS?
a. Set No: 1,2
b. Set No: 1,2,3,4
c. Set No:1,2,3,4,5,
d. Set No:1,2,3,4,5,6
19. What material is used to make radius and fillet gauge?
a. Tool steel
b. Hardened steel sheet
c. High carbon steel
d. Medium carbon steel
20. What is the purpose of slit provided in the lapping tool?
a. For clearance
b. For expansion
c. To retain abrasive
d. To adjust the sleeve
21. What type of abrasives are used in honing cast iron and non-ferrous materials?
a. Diamond
b. Boron carbide
c. Silicon carbide
d. Aluminum oxide
22. Which method of surface hardening, the surface remains free from scales?
a. Nitriding
b. Case hardening
c. Flame hardening
d. Induction hardening
23. What is the process if the steel is heated above critical temperature and soaking it for sufficient time and cooling it very slowly within furnace?
A. Annealing
b. Hardening
c. Tempering
d. Normalising
24. What is the process to refine the structure of steel component?
a. Tempering
b. Annealing
c. Hardening
d. Normalising
25. Which method of surface hardening is done in a heated salt bath?
a. Flame hardening
b. Gas carburising
c. Pack carburising
d. Liquid carburising
26. Which key has rectangular cross section is fit into keyway cut on both shaft and hub?
a. Sunk-key
b. Feather key
c. Flat saddle key
d. Hollow saddle key
27. Which key is useful for fitting on tapered shafts?
a. Feather key
b. Gib head key
c. woodruff key
d. Flat saddle key
28. Where is circular tapper key used?
a. Light duty transmission
b. Bi-directional rotation
c. Lengthy shaft
d. Tapered shaft
29. How the plain bearings are kept in a position without allowing them to rotate along with the shaft?
a. By clamps
b. By bolt and nut
c. By key or screws
d. By locking device
30. What is the file for lock repair and filing hard notches in keys?
a. Pillar file
b. Flexible file
c. Warding file
d. Swiss pattern file
31. What is the advantage of lock washer?
a. Provide increased bearing surface
b. Prevent the damage of the surface
c. Distribute even pressure on working surface
d. Prevent bolt or nut from loosening under
32. What is the advantage of using Gib headed key?
a. Used for tapered fittings
b. Can be withdrawn easily
c. Provides unidirectional torque
d. Good in high speed application
33. Which file is used for finishing sharp corners?
a. Pillar file
b. Riffler file
c. Barrette file
d. Warding file
34. Which device is used to check the workpiece to confirm the shape?
a. Profile gauge
b. Snap gauge
c. Caliper gauge
d. Progressive gauge
35. What is the purpose of feeler gauge?
a. Check the depth of drilled hole
b. Check the pitch of screw thread
c. Check the radius of workpiece
d. Check the gap between the mating parts
36. Which gauge is used to check the outside diameter of a cylindrical shaft?
a. Plug gauge
b. plain ring gauge
c .Taper ring gauge
d. Progressive plug gauge
37. What is the act of joining the slip gauges together for building up sizes?
a. Glazing
b. Pinning
c. Loading
d.wringing
38. What material is used to make sine bar?
a. Invar steel
b. High speed steel
c. High carbon steel
d. Stabilized chromium steel
39. How the length of sine bar is specified?
a. Distance between outer point of roller
b. Distance between inner point of roller
c. Distance between centre point of rollers
d. Distance between the edges of sine bar
40. Which one forms the hypotenuse of the triangle while checking with sine bar?
a. Surface plate
b. Sine bar width
c. Sine bar length
d. Slip gauges height
41.What is the effect of excessive application of abrasive compound in lapping operation?
a. Developing inaccuracies
b. Bright spots will be visible
c. Obstruct component movement
d. Lapping compound will be sticky
42. What is caused if the lap is harder than the workpiece?
a. Workpiece will cut the lap
b. Accuracy can’t be obtained
c. Lap will cut the workpiece
d. Lapping operation leaves high spots
43. Which material is used to make small diameter laps?
a. Cast Iron
b. Aluminium
c. Bronze or zinc
d. Copper or brass
44. Why manual stroking is preferred for large quantities in honing operation?
a. To reduce cost
b. To reduce time
c. To keep close tolerance
d. To reduce maintenance cost
45. What is the purpose of hardening?
a. Refine the structure
b. Increase toughness
c. Increase cutting ability
d. Relieve stress and strain
46. Which method of heat treatment to improve machinability and ductility in the job?
a. Annealing
b. Hardening
c. Tempering
d. Normalizing
47. What is the disadvantage of flame hardening in the heat treatment process?
a. More distortion
b. Long hardening time
c. Small depth of hardening
d. Not suitable for small workpieces
48. What is the name of method in metallic coating done by rolling or drawing the layers of metal on the base metal?
a. Spraying
b. Cladding
c. Enameling
d. Molten metal bath
49. Which type of key used if the hub of pulley has to axially slide on the shaft to some distance?
a. Feather key
b. Flat saddle key
c. Circular taper key
d. Hallow saddle key
50. Which nut protects the bolt end thread from damages?
a. Cap nut
b. Castle nut
c. Slotted nut
d. Knurled nut
51. Which grade slip gauge is used for precision tool room applications?
a. Grade 00
B. Grade 0
C. Grade I
D. Grade II
52. Which material is used to make slip gauge block?
a. Tool steel
b. Low grade steel
c. High grade steel with low thermal expansion
d. High carbon steel
53. Which operation is performed with fine abrasive particles?
a. Filing
b. Lapping
c. Scraping
d. Polishing
54. What is the purpose of normalising? |
a. Add cutting ability
b. Develop high hardness
c. Increase wear resistance
d. Remove stress and strain
55. Which structure of steel contain 0% carbon?
a. Ferrite
b. Pearlite
c. Austenite
d. Cementite
56. Which type of key is used for transmitting high torque on both direction of rotation?
a. Flat saddle key
b. Taper sunk key
c. Woodruff key
d. Tangential key
57. What is the use of ring gauge?
a. Check hole diameter
b. Check shaft diameter
c. Check tapered shaft diameter |
d. Check internal thread diameter
58. Which gauge is used to check the accuracy of an external thread?
a. Ring gauge
b. Snap gauge
c. Thread ring gauge
d. Centre gauge
59. What is the procedure to select the slip gauge for particular dimension?
a. Built with grade accuracy
b. Minimum number of blocks
c. Maximum number of block |
d. Start wringing with small size slip gauge
60. Which process improves the quality of fit between the mating components?
a. Filing
b. Turning
c. Grinding
d. Lapping
61. Which abrasive is used for lapping hardened steel and cast iron?
a. silicon carbide
b. Boron carbide
c. Aluminium oxide
d. Fused aluminum
62. Which finishing operation is performed by the tool that rotate and reciprocate simultaneously?
a. Drilling
b. Honing
c. Lapping
d. Grinding