Manufacturing & Production Engineering 1000+ MCQ with answer for IBPS Clerk

1. Side rake angle of a single point cutting tool is the angle
A. By which the face of the tool is inclined towards back
B. By which the face of the tool is inclined sideways
C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Answer : B

2. The saw milling is an operation of
A. Producing grooves around the periphery of a cylindrical or conical workpiece
B. Producing narrow slots or grooves on a workpiece
C. Reproduction of an outline of a template on a workpiece
D. Machining several surfaces of a workpiece simultaneously
Answer : B

3. The purpose of jigs and fixtures is to
A. Increase machining accuracy
B. Facilitate interchangeability
C. Decrease expenditure on quality control
D. All of these
Answer : D

4. 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

5. EDM machining is applied for
A. Shaping carbide dies and punches having complicated profiles
B. Making large number of small holes in sieves and fuel nozzles
C. Embossing and engraving on harder materials
D. All of these
Answer : D

6. In oblique cutting system, the maximum chip thickness
A. Occurs at the middle
B. May not occur at the middle
C. Depends upon the material of the tool
D. Depends upon the geometry of the tool
Answer : B

7. Climb milling is chosen while machining because
A. The chip thickness increase gradually
B. It enables the cutter to dig in and start the cut
C. The specific power consumption is reduced
D. Better surface finish can be obtained
Answer : B

8. 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

9. 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

10. The specific cutting energy used for establishing the machinability of the metal depends upon its
A. Coefficient of friction
B. Microstructure
C. Work hardening characteristics
D. All of these
Answer : D

11. 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

12. A process of removing metal by pushing or pulling a cutting tool is called
A. Up milling
B. Down milling
C. Forming
D. Broaching
Answer : D

13. 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

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

15. 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

16. 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

17. A dynamometer is a device used for the measurement of
A. Chip thickness ratio
B. Forces during metal cutting
C. Wear of the cutting tool
D. Deflection of the cutting tool
Answer : B

18. Internal or external threads of different pitches can be produced by
A. Pantograph milling machine
B. Profiling machine
C. Planetary milling machine
D. Piano miller
Answer : C

19. Ceramic cutting tools are
A. Made by cold pressing of aluminium oxide powder
B. Available in the form of tips
C. Brittle and have low bending strength
D. All of these
Answer : D

20. The surface finish is improved by the increase in
A. Cutting speed
B. Nose radius
C. True rake angle
D. All of these
Answer : D

21. 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

22. In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be
A. Doubled
B. Halved
C. Quadrupled
D. Unchanged
Answer : A

23. The lip angle is the angle
A. Between the tool face and the ground end surface of flank
B. Made by the face of the tool and the plane parallel to the base of the cutting tool
C. Between the face of the tool and a line tangent to the machined surface at the cutting point
D. None of the above
Answer : A

24. 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

25. 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

26. 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

27. 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

28. The aluminium oxide abrasive is chiefly used for grinding
A. High speed steel
B. Carbon steel
C. Wrought iron
D. All of these
Answer : D

29. It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If the spindle speed is 60 r.p.m., then the speed of lead screw will be
A. 10 r.p.m.
B. 20 r.p.m.
C. 120 r.p.m.
D. 180 r.p.m.
Answer : B

30. The point angle of a drill, for drilling stainless steel, is
A. 90°
B. 118°
C. 135°
D. 150°
Answer : C

31. 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

32. 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

33. The floating position of the holding fixture in a rotary transfer device is used to
A. Improve the accuracy of location
B. Reduce the tendency to over-index
C. Improve upon the acceleration and deceleration characteristics
D. Reduce the cycle time
Answer : D

34. The material property which depends only on the basic crystal structure is
A. Fatigue strength
B. Work hardening
C. Fracture strength
D. Elastic constant
Answer : C

35. 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

36. A grinding wheel is said to be of _________ if it holds the abrasive grains more securely.
A. Soft grade
B. Medium grade
C. Hard grade
D. None of these
Answer : C

37. Twist drills are made of
A. High speed steel
B. Carbon steel
C. Stainless steel
D. Either (A) or (B)
Answer : D

38. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to minimum when the tooth leaves the work.
A. Up milling
B. Down milling
C. Face milling
D. End milling
Answer : B

39. The size of a lathe is specified by the
A. Length between centres
B. Swing diameter over the bed
C. Swing diameter over the carriage
D. All of these
Answer : D

40. The percentage of carbon in gray cast iron is in the range of
A. 0.25 to 0.75 percent
B. 1.25 to 1.75 percent
C. 3 to 4 percent
D. 8 to 10 percent
Answer : C

41. 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

42. 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

43. In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as
A. Side relief angle
B. End relief angle
C. Back rake angle
D. Side rake angle
Answer : B

44. In oblique cutting system, the cutting edge of the tool
A. May clear the width of the workpiece
B. May or may not clear the width of the workpiece
C. May not clear the width of the workpiece
D. Should always clear the width of the workpiece
Answer : C

45. The grinding wheel speed (surface speed in m/min) usually varies from
A. 500 to 1000
B. 1000 to 1500
C. 1500 to 2000
D. 2000 to 2500
Answer : C

46. Which one among the following welding processes uses nonconsumable electrode?
A. Gas metal arc welding
B. Submerged arc welding
C. Gas tungsten arc welding
D. Flux coated arc welding
Answer : C

47. What is the type of welding defect caused due to shrinkage during solidification and by weld stresses called?
A. Incomplete fusion
B. Lamellar tearing
C. Mismatch
D. Shrinkage void
Answer : B

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

49. A hole is of dimension ? = 9 ?0????¹? mm. The corresponding shaft is of dimension ? = 9 ?0.001????¹? mm. The resulting assembly has
A. Loose running fit
B. Close running fit
C. Transition fit
D. Interference fit
Answer : C

50. Chemical milling operation is performed
A. On universal milling machine
B. On plain milling machine
C. In a tank containing an etching solution
D. Any one of these
Answer : C