GRE - Manufacturing & Production Engineering 1000+ MCQ [Solved] PDF Download

1. 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

2. 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

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

4. 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

5. 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

6. When the tool moves parallel to the lathe axis, the movement is termed as
A. Cross feed
B. Angular feed
C. Longitudinal feed
D. Any one of these
Answer : C

7. The increase in depth of cut and feed rate __________ surface finish.
A. Improves
B. Deteriorates
C. Does not effect
D. None of these
Answer : B

8. The operation performed on a shaper is
A. Machining horizontal surface
B. Machining vertical surface
C. Machining angular surface
D. All of these
Answer : D

9. Tool life is generally better when
A. Grain size of the metal is large
B. Grain size of the metal is small
C. Hard constituents are present in the microstructure of the tool material
D. None of the above
Answer : A

10. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of current change when the weld road is varied rapidly?
A. Reactor
B. Kerf
C. Inductor
D. Cone
Answer : C

11. The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece, is called
A. Up milling
B. Down milling
C. Face milling
D. End milling
Answer : B

12. 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

13. Tumbler gears in lathe are used to
A. Reduce the spindle speed
B. Cut gears
C. Give desired direction of movement to the lathe carriage
D. Drill a workpiece
Answer : C

14. The type of reamer used for reaming operation in a blind hole, is
A. Straight fluted reamer
B. Left hand spiral fluted reamer
C. Right hand spiral fluted reamer
D. Any one of these
Answer : C

15. A twist drill is specified by its
A. Shank, material and diameter
B. Shank, lip angle and size of flute
C. Material, length of body and helix angle
D. Any one of these
Answer : A

16. Quality screw threads are produced by
A. Thread milling
B. Thread chasing
C. Thread cutting with single point tool
D. Thread casting
Answer : D

17. A grinding wheel becomes glazed (i.e. cutting edge takes a glasslike appearance) due to
A. Wear of bond
B. Breaking of abrasive grains
C. Wear of abrasive grains
D. Cracks on grinding wheel
Answer : C

18. Which of the following statement is correct in regard to centreless grinding?
A. The workpiece is supported throughout its entire length as grinding takes place.
B. It is a continuous process and adopted for production work.
C. It requires no holding device for the work.
D. All of the above
Answer : D

19. During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 ; the type of tool motion will be
A. Circular Interpolation ? clockwise
B. Circular Interpolation ? counter clockwise
C. Linear Interpolation
D. Rapid feed
Answer : A

20. 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

21. The angle between the face and flank of the single point cutting tool is known as
A. Rake angle
B. Clearance angle
C. Lip angle
D. Point angle
Answer : C

22. The cutting speed is minimum while machining _________ with a high speed steel tool.
A. Cast iron
B. Mild steel
C. Brass
D. Aluminium
Answer : A

23. The work or surface speed for cylindrical grinding varies from
A. 5 to 10 m/min
B. 10 to 20 m/min
C. 20 to 30 m/min
D. 40 to 60 m/min
Answer : C

24. If the cutting speed is increased, then the built-up-edge
A. Becomes longer
B. May or may not form
C. Becomes smaller and finally does not form at all
D. Has nothing to do with speed
Answer : C

25. Gears can be best produced on mass production by
A. Shaping
B. Casting
C. Forming
D. Hobbing
Answer : D

26. The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
A. 10 to 20 m/min
B. 18 to 30 m/min
C. 24 to 45 m/min
D. 60 to 90 m/min
Answer : D

27. In order to have interference fit, it is essential that the lower limit of the shaft should be
A. Greater than the upper limit of the hole
B. Lesser than the upper limit of the hole
C. Greater than the lower limit of the hole
D. Lesser than the lower limit of the hole
Answer : A

28. The type of tool used on milling machine and broaching machine is
A. Single point cutting tool
B. Two point cutting tool
C. Three point cutting tool
D. Multipoint cutting tool
Answer : D

29. The tool life is affected by
A. Depth of cut
B. Cutting speed
C. Feed
D. All of these
Answer : D

30. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
A. 5 m/min
B. 10 m/min
C. 15 m/min
D. 30 m/min
Answer : D

31. Continuous chips with built up edge are formed during machining of
A. Brittle metals
B. Ductile metals
C. Hard metals
D. Soft metals
Answer : B

32. In transverse 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 : A

33. A single point tool has
A. Rake angle
B. Cutting angle
C. Lip angle
D. All of these
Answer : D

34. 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

35. In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called
A. Friction zone
B. Work-tool contact zone
C. Shear zone
D. None of these
Answer : C

36. The object of caulking in a riveted joint is to make the joint
A. Free from corrosion
B. Stronger in tension
C. Free from stresses
D. Leak-proof
Answer : D

37. The tail stock set over method of taper turning is preferred for
A. Internal tapers
B. Small tapers
C. Long slender tapers
D. Steep tapers
Answer : C

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. A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is
A. 0.2 mm
B. 10 mm
C. 20 mm
D. 100 mm
Answer : C

40. 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

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

42. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
A. Independent of index change gear ratio
B. Dependent on speed change gear ratio
C. Interrelated to index change gear ratio
D. Independent of speed and index change gear ratio
Answer : C

43. Stellite preserves hardness upto a temperature of
A. 350°C
B. 500°C
C. 900°C
D. 1100°C
Answer : D

44. A broach has
A. Roughing teeth
B. Semi-finishing teeth
C. Finishing teeth
D. All of these
Answer : D

45. A 15 mm drilling machine means that it can drill a hole
A. Of maximum diameter 15 mm
B. In 15 mm thick plates
C. Having cross-sectional area of 15 mm²
D. None of these
Answer : A

46. Crater 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 only
C. Cutting edge only
D. Front face only
Answer : B

47. The abrasive recommended for grinding materials of low tensile strength is
A. Silicon carbide
B. Aluminium oxide
C. Sand stone
D. Diamond
Answer : A

48. Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
A. Low carbon steel
B. Titanium
C. Copper
D. Tin
Answer : D

49. Soft materials can not be economically ground due to
A. High temperature involved
B. Frequent wheel clogging
C. Rapid wheel wear
D. Low work piece stiffness
Answer : B

50. In which of the following milling machine, the table can be tilted in a vertical plane by providing a swivel arrangement at the knee?
A. Universal milling machine
B. Plain milling machine
C. Universal milling machine
D. Hand milling machine
Answer : C