1000+ Manufacturing & Production Engineering Multiple Choice Question Answer [Solved]

1. The cutting force in up milling __________ per tooth movement of the cutter.
A. Is zero
B. Is maximum
C. Decreases from maximum to zero
D. Increases from zero to maximum
Answer : D

2. High speed steel drills can be operated at about _________ the speed of high carbon steel drills.
A. One-half
B. One-fourth
C. Double
D. Four times
Answer : C

3. The effect of setting a boring tool above centre 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

4. The rake angle required to machine brass by high speed steel tool is
A. 0°
B. 10°
C. 20°
D. 100°
Answer : A

5. A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
A. Soft grade
B. Medium grade
C. Hard grade
D. None of these
Answer : A

6. In an interchangeable assembly, shafts of size 25.000 -0.010?????? mm mate with holes of size 25.000 -0.020????³?, the maximum interference (in microns) in the assembly is
A. 40
B. 30
C. 20
D. 10
Answer : C

7. In ECM, the material removal is due to
A. Corrosion
B. Erosion
C. Fusion
D. Ion displacement
Answer : D

8. The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called
A. Ceramic
B. Stellite
C. Diamond
D. Cemented carbide
Answer : B

9. In plunge grinding
A. The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
B. The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
C. The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
D. The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face
Answer : B

10. In a plain milling machine, the table can be moved
A. Longitudinally
B. Crosswise
C. Vertically
D. All of these
Answer : D

11. The chamfering is an operation of
A. Bevelling the extreme end of a workpiece
B. Embossing a diamond shaped pattern on the surface of a workpiece
C. Reducing the diameter of a workpiece over a very narrow surface
D. Enlarging the end of a hole cylindrically
Answer : A

12. Lathe bed is made of
A. Mild steel
B. Alloy steel
C. Pig iron
D. Chilled cast iron
Answer : D

13. The tool made of cemented carbide wear out faster at
A. Slow speeds
B. Medium speeds
C. Fast speeds
D. Very fast speeds
Answer : A

14. For turning small taper on long workpiece, the suitable method is
A. By a form tool
B. By setting over the tail stock
C. By a taper turning attachment
D. By swivelling the compound rest
Answer : B

15. The size of a shaper is given by
A. Stroke length
B. Motor power
C. Mass of machine
D. Rate size
Answer : A

16. Cold working of steel is defined as working
A. At its recrystallisation temperature
B. Above its recrystallisation temperature
C. Below its recrystallisation temperature
D. At two thirds of the melting temperature of the metal
Answer : C

17. Crater wear is mainly due to the phenomenon known as
A. Adhesion of metals
B. Oxidation of metals
C. Diffusion of metals
D. All of these
Answer : C

18. Flank wear occurs mainly on the
A. Nose part, front relief face and side relief face of the cutting tool
B. Face of the cutting tool at a short distance from the cutting edge
C. Cutting edge only
D. Front face only
Answer : A

19. A drill considered as a cutting tool having zero rake, is known as a
A. Flat drill
B. Straight fluted drill
C. Parallel shank twist drill
D. Tapered shank twist drill
Answer : B

20. Flank wear depends upon the
A. Hardness of the work and tool material at the operating temperature
B. Amount and distribution of hard constituents in the work material
C. Degree of strain hardening in the chip
D. All of these
Answer : B

21. In determining the various forces on the chip, Merchant assumed that the
A. Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
B. Only continuous chip without built-up-edge is produced
C. Cutting velocity remains constant
D. All of the above
Answer : D

22. Which of the following parameters influence the axial feed rate in centerless grinding?
A. Regulating wheel diameter
B. Speed of the regulating wheel
C. Angle between the axes of grinding and regulating wheels
D. All of the above
Answer : D

23. Internal gear cutting operation can be performed by
A. Milling
B. Shaping with rack cutter
C. Shaping with pinion cutter
D. Hobbing
Answer : C

24. Which of the following arc welding processes does not use consumable electrodes?
A. GMAW
B. GTAW
C. Submerged Arc Welding
D. None of these
Answer : B

25. A better machinable metal is one which gives
A. Lower chip-tool contact area and larger shear angle
B. Higher chip-tool contact area and smaller shear angle
C. Lower chip-tool contact area and smaller shear angle
D. Higher chip-tool contact area and larger shear angle
Answer : A

26. Hardness of green sand mould increases with
A. Increase in moisture content beyond 6 percent
B. Increase in permeability
C. Decrease in permeability
D. Increase in both moisture content and permeability
Answer : C

27. Hot rolling of mild steel is carried out
A. At recrystallization temperature
B. Between 100?C to 150?C
C. Between recrystallization temperature
D. Above recrystallization temperature
Answer : D

28. A shaft has a dimension, ?9 +0.025??????, the respective values of fundamental deviation and tolerance are
A. - 0.025, ±0.008
B. - 0.025, 0.016
C. - 0.009, ± 0.008
D. - 0.009, 0.016
Answer : D

29. In centreless grinders, the regulating wheel is inclined at
A. 0° to 8°
B. 9° to 15°
C. 16° to 20°
D. 21° to 25°
Answer : A

30. In metal machining, the work-tool contact zone is a zone where heat is generated due to
A. Plastic deformation of metal
B. Burnishing friction
C. Friction between the moving chip and the tool face
D. None of the above
Answer : B

31. An expendable pattern is used in
A. Slush casting
B. Squeeze casting
C. Centrifugal casting
D. Investment casting
Answer : D

32. When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.
A. Single riveted
B. Double riveted
C. Both (A) and (B)
D. None of these
Answer : B

33. In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to the maximum when the cut terminates.
A. Conventional milling
B. Climb milling
C. Face milling
D. End milling
Answer : A

34. Buffing wheels are made of
A. Softer metals
B. Cotton fabric
C. Carbon
D. Graphite
Answer : B

35. In up-cut milling the work piece is fed
A. Against the rotating cutter
B. At angle of 60° to the cutter
C. In the direction of the cutter
D. At the right angle to the cutter
Answer : A

36. In hot machining, the work is heated by
A. Simple heating
B. Flame heating
C. Induction heating
D. Any one of these
Answer : D

37. Larger end cutting edge angle _________ tool life.
A. Increases
B. Decreases
C. Does not effect
D. None of these
Answer : A

38. The addition of lead, sulphur and phosphorus to low carbon steels, help to
A. Reduce built up edge
B. Break up chips
C. Improve machinability
D. All of these
Answer : D

39. For softer materials, the point angle of the drill is kept
A. Equal to 118°
B. Less than 118°
C. More than 118°
D. Any one of these
Answer : B

40. A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25mm. The percentage change in diameter is
A. 0
B. 2.07
C. 20.7
D. 41.4
Answer : D

41. In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called
A. Friction zone
B. Work-tool contact zone
C. Shear zone
D. None of these
Answer : A

42. The example of snag grinding is
A. Trimming the surface left by sprues and risers on castings
B. Grinding the parting line left on castings
C. Removing flash on forgings
D. All of these
Answer : D

43. The velocity of tool along the tool face is known as
A. Shear velocity
B. Chip velocity
C. Cutting velocity
D. Mean velocity
Answer : B

44. The maximum production of small and slender parts is done by
A. Watch maker's lathe
B. Sliding head stock automatic lathe
C. Multi-spindle automatic lathe
D. Capstan lathe
Answer : C

45. In a centre lathe, the cutting tool is fed in _________ with reference to the lathe axis.
A. Cross direction only
B. Longitudinal direction only
C. Both cross and longitudinal direction
D. Any direction
Answer : C

46. A push broach as compared to pull broach
A. Has less number of teeth
B. Is short and stocky
C. Removes less material for each pass of the tool
D. All of the above
Answer : D

47. When the shear angle is small
A. Path of shear is short and chip is thin
B. Path of shear is large and chip is thick
C. Path of shear is short and chip is thick
D. Path of shear is large and chip is thin
Answer : B

48. Which of the following statement is incorrect with reference of lathe cutting tools?
A. The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
B. The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
C. The heel is that part of the tool which is shaped to produce the cutting edges and face
D. The base is that surface of the shank which bears against the support and takes tangent pressure of the cut
Answer : C

49. The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.
A. Mild steel
B. Copper
C. Aluminium
D. Brass
Answer : A

50. The chamfering is an essential operation after
A. Knurling
B. Rough turning
C. Boring
D. Thread cutting
Answer : D