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

1. In which of the following machine, the work remains stationary and the tool is rotated?
A. Vertical boring machine
B. Horizontal boring machine
C. Precision boring machine
D. Jig boring machine
Answer : B

2. A dense structure of a grinding wheel is used for
A. Hard materials
B. Brittle materials
C. Finishing cuts
D. All of these
Answer : D

3. High speed steel tools retain their hardness upto a temperature of
A. 250°C
B. 350°C
C. 500°C
D. 900°C
Answer : D

4. The type of tool used on lathe, shaper and planer is
A. Single point cutting tool
B. Two point cutting tool
C. Three point cutting tool
D. Multipoint cutting tool
Answer : A

5. The soft grade grinding wheels are denoted by the letters
A. A to H
B. I to P
C. Q to Z
D. A to P
Answer : A

6. Gear finishing operation is called
A. Shaping
B. Milling
C. Hobbing
D. Burnishing
Answer : D

7. The grooving 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 : C

8. Glazing in grinding wheels takes place when the
A. Wheel is too hard or wheel revolves at a very high speed
B. Wheel is too soft or wheel revolves at a very slow speed
C. Wheel is too hard and wheel revolves at very slow speed
D. Wheel is too soft and wheel revolves at a very high speed
Answer : A

9. In a shaper, the metal is removed during
A. Forward stroke
B. Return stroke
C. Both the forward and return strokes
D. Neither the forward nor the return stroke
Answer : A

10. With the same tool life, the maximum material per minute is removed by
A. Increasing the cutting speed
B. Decreasing the cutting speed
C. Increasing the depth of cut
D. Increasing the feed rate
Answer : C

11. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called
A. Face
B. Fillet
C. Gash
D. Land
Answer : C

12. What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?
A. Ultrasonic welding
B. Forge welding
C. Electron beam welding
D. Friction welding
Answer : D

13. The ductile materials, during machining, produce
A. Continuous chips
B. Discontinuous chips
C. Continuous chips with built up edge
D. Either (A) or (C)
Answer : D

14. 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

15. During normalizing process of steel, the specimen is heated
A. Between the upper and lower critical temperature and cooled in still air.
B. Above the upper critical temperature and cooled in furnace.
C. Above the upper critical temperature and cooled in still air.
D. Between the upper and lower critical temperature and cooled in furnace.
Answer : C

16. Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)
A. AW, LC and M
B. AW, D, LC and M
C. D, LC, P and SW
D. D, LC, and SW
Answer : A

17. When the temperature of a solid metal increases,
A. Strength of the metal decreases but ductility increases
B. Both strength and ductility of the metal decreases
C. Both strength and ductility of the metal increases
D. Strength of the metal increases but ductility decreases
Answer : A

18. The silicon carbide abrasive is chiefly used for grinding
A. Cemented carbide
B. Ceramic
C. Cast iron
D. All of these
Answer : D

19. Misrun is a casting defect which occurs due to
A. Very high pouring temperature of the metal
B. Insufficient fluidity of the molten metal
C. Absorption of gases by the liquid metal
D. Improper alignment of the mould flasks
Answer : B

20. Ultrasonic machining is best suited for
A. Tool steels
B. Sintered carbides
C. Glass
D. All of these
Answer : D

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

22. The lathe spindles at the nose end have
A. Internal screw threads
B. External screw threads
C. No threads
D. Tapered threads
Answer : B

23. 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

24. Crater wear is predominant in
A. Carbon tool steels
B. Tungsten carbide tools
C. High speed steel tools
D. Ceramic tools
Answer : B

25. In drilling aluminium, a drill with
A. Zero helix angle is used
B. Low helix angle is used
C. High helix angle is used
D. Any helix angle can be used
Answer : C

26. The lip clearance angle is the angle formed by the
A. Leading edge of the land with a plane having the axis of the drill
B. Flank and a plane at right angles to the drill axis
C. Chisel edge and the lip as viewed from the end of a drill
D. None of the above
Answer : B

27. The common welding error that occurs due to shrinkage of weld metal, faulty clamping of parts, faulty penetration or overheating at joints is called?
A. Distortion
B. Warping
C. Porous weld
D. Poor fusion
Answer : B

28. Friction at the tool-chip interface can be reduced by
A. Decreasing the rake angle
B. Increasing the depth of cut
C. Decreasing the cutting speed
D. Increasing the cutting speed
Answer : D

29. If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
A. Forehand welding
B. Flux cored ARC welding
C. Electro slag welding
D. Pulsed spray welding
Answer : A

30. The negative rake is usually provided on
A. High carbon steel tools
B. High speed steel tools
C. Cemented carbide tools
D. All of these
Answer : C

31. Ceramic tools are fixed to tool body by
A. Soldering
B. Brazing
C. Welding
D. Clamping
Answer : B

32. In ultrasonic machining, tool is made of
A. Tungsten carbide
B. Brass or copper
C. Diamond
D. Stainless steel
Answer : B

33. Any number of equal divisions can be obtained on milling machine by
A. Direct indexing
B. Simple indexing
C. Compound indexing
D. Differential indexing
Answer : B

34. The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
A. Equal to
B. Less than
C. More than
D. None of these
Answer : A

35. 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

36. The tailstock set over required to turn a taper on the entire length of a workpiece having diameters D and d is
A. (D - d)/2L
B. (D - d)/L
C. (D - d)/2
D. D - d
Answer : C

37. For turning internal tapers, 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 : C

38. The common welding error that occurs due to wrong speed, faulty preparation, and high / low current, improper electrode size is called?
A. Distortion
B. Warping
C. Porous weld
D. Poor fusion
Answer : D

39. The usual value of the point angle of a drill is
A. 70°
B. 100°
C. 118°
D. 130°
Answer : C

40. What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
A. Argon H?
B. Argon CO?
C. Argon Helium
D. Helium
Answer : B

41. Glazing in grinding wheels can be decreased by
A. Using a harder wheel or by increasing the wheel speed
B. Using a softer wheel or by decreasing the wheel speed
C. Using a harder wheel or by decreasing the wheel speed
D. Using a softer wheel or by increasing the wheel speed
Answer : B

42. Which of the following is the correct data structure for solid models?
A. Solid part - faces - edges - vertices
B. Solid part - edges - faces - vertices
C. Vertices - edges - faces - solid parts
D. Vertices - faces- edges - solid parts
Answer : C

43. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is
A. Conical locator
B. Cylindrical locator
C. Diamond pin locator
D. Vee locator
Answer : A

44. The angle between the shear plane and __________ is called shear angle.
A. Work surface
B. Tool face
C. Machine surface
D. None of these
Answer : A

45. Match the following metal forming processes with their associated stresses in the work piece.

Metal forming process	Types of stress
1. Coining	P. Tensile
2. Wire Drawing	Q. Shear
3. Blanking	R. Tensile and compressive
4. Deep Drawing	S. Compressive

A. 1-S, 2-P, 3-Q, 4-R
B. 1-S, 2-P, 3-R, 4-Q
C. 1-P, 2-Q, 3-S, 4-R
D. 1-P, 2-R, 3-Q, 4-S
Answer : A

46. What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
A. Porosity
B. Undercut
C. Under fill
D. Crack
Answer : B

47. In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
A. Cylindrical grinder
B. Internal grinder
C. Surface grinder
D. Tool and cutter grinder
Answer : C

48. For fast removal of materials during grinding, a _________ grinding wheel is used.
A. Course grained
B. Fine grained
C. Medium grained
D. None of these
Answer : A

49. The lead screw of a lathe has _________ threads.
A. Single start
B. Double start
C. Multi-start
D. Any one of these
Answer : A

50. The tap used to cut threads in a blind hole is
A. Taper tap
B. Second tap
C. Bottoming tap
D. Any one of these
Answer : C