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

1. The hardness of a grinding wheel is determined by the
A. Hardness of abrasive grains
B. Ability of the bond to retain abrasives
C. Hardness of the bond
D. Ability of the grinding wheel to penetrate the work piece
Answer : B

2. A fine grained grinding wheel is used to grind
A. Hard and brittle materials
B. Soft and ductile materials
C. Hard and ductile materials
D. Soft and brittle materials
Answer : A

3. 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

4. Which one of the following is a solid state joining process?
A. Gas tungsten arc welding
B. Resistance spot welding
C. Friction welding
D. Submerged arc welding
Answer : C

5. 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

6. The actual feed in centerless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and ? = Angle of inclination of wheel)
A. ?d
B. ?dn
C. ?dn sin?
D. ?dn cos?
Answer : C

7. A jig is defined as a device which
A. Holds and locates a workpiece and guides and controls one or more cutting tools
B. Holds and locates a workpiece during an inspection or for a manufacturing operation
C. Is used to check the accuracy of workpiece
D. All of the above
Answer : A

8. In a metal arc welding process, metal transfer across the arc may take place by a method of material transfer where the metal transfers across the arc is in larger drops. This is at the rate of 100 drops / sec or less, what is this known as
A. Globular transfer
B. Spray transfer
C. GMAW practice
D. Dip transfer
Answer : D

9. Trepanning is an operation of
A. Making a cone-shaped enlargement of the end of a hole
B. Smoothing and squaring the surface around a hole
C. Sizing and finishing a small diameter hole
D. Producing a hole by removing metal along the circumference of a hollow cutting tool
Answer : D

10. Relief angles on high speed steel tools usually vary from
A. 0° to 3°
B. 3° to 10°
C. 10° to 20°
D. 20° to 30°
Answer : D

11. The operation of machining several surfaces of a workpiece simultaneously is called
A. Profile milling
B. Gang milling
C. Saw milling
D. Helical milling
Answer : B

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

13. The binding material used in cemented carbide tools is
A. Tungsten
B. Chromium
C. Silicon
D. Cobalt
Answer : D

14. In machining metal, cutting force at the cutting edge is measured by a
A. Wattmeter
B. Dynamometer
C. Hydrometer
D. Pyrometer
Answer : B

15. A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2mm depth by a cutter of 10 mm diameter between points (0,0) and (100,100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min, milling time for the slot (in seconds) is
A. 120
B. 170
C. 180
D. 240
Answer : B

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

17. 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

18. 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

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

20. When the cutting edge of the tool is dull, then during machining
A. Continuous chips are formed
B. Discontinuous chips are formed
C. Continuous chips with built-up edge are formed
D. No chips are formed
Answer : C

21. In order to obtain a surface finish in the range of 0.75 ?m to 1.25 ?m , the operation used is called.
A. Grinding
B. Lapping
C. Honing
D. Buffing
Answer : A

22. 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

23. 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

24. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
A. 5°
B. 6°
C. 8°
D. 10°
Answer : B

25. In electro-discharge machining, dielectric is used to
A. Help in the movement of the sparks
B. Control the spark discharges
C. Act as coolant
D. All of these
Answer : D

26. The correct sequence of the following parameters in order of their maximum to minimum influence on tool life is
A. Feed rate, depth of cut, cutting speed
B. Depth of cut, cutting speed, feed rate
C. Cutting speed, feed rate, depth of cut
D. Feed rate, cutting speed, depth of cut
Answer : C

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. Cast iron during machining produces
A. Continuous chips
B. Discontinuous chips
C. Continuous chips with built-up edge
D. None of these
Answer : B

29. Which of the following statement is wrong?
A. The larger side rake angle produces chipping.
B. The smaller rake angle produces excessive wear and deformation in tool.
C. The side cutting edge angle (less than 15°) increases tool life.
D. The increase in nose radius decreases tool life.
Answer : D

30. 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

31. The tool material, for faster machining, should have
A. Wear resistance
B. Red hardness
C. Toughness
D. All of these
Answer : D

32. 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

33. 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

34. The cutting angle of a flat drill varies from
A. 3° to 8°
B. 20° to 30°
C. 60° to 90°
D. 90° to 120°
Answer : D

35. 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

36. 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

37. In a shaper, the length of stroke is increased by
A. Increasing the centre distance of bull gear and crank pin
B. Decreasing the centre distance of bull gear and crank pin
C. Increasing the length of the arm
D. Decreasing the length of the slot in the slotted lever
Answer : A

38. In oblique cutting of metals, the cutting edge of the tool is
A. Perpendicular to the workpiece
B. Perpendicular to the direction of tool travel
C. Parallel to the direction of tool travel
D. Inclined at an angle less than 90° to the direction of tool travel
Answer : D

39. The broaching operation in which either the work or the tool moves across the other, is known as
A. Pull broaching
B. Push broaching
C. Surface broaching
D. Continuous broaching
Answer : C

40. Crater wear leads to
A. Increase in cutting temperature
B. Weakening of tool
C. Friction and cutting forces
D. All of these
Answer : D

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

42. A drill mainly used in drilling brass, copper or softer materials, is
A. Flat drill
B. Straight fluted drill
C. Parallel shank twist drill
D. Tapered shank twist drill
Answer : B

43. If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
A. ARC
B. Short ARC
C. ARC length
D. ARC blow
Answer : B

44. The maximum possible draft in cold rolling of sheet increases with the
A. Increase in coefficient of friction
B. Decrease in coefficient of friction
C. Decrease in roll radius
D. Decrease in roll velocity
Answer : A

45. If the helix angle of the drill is made _________ 30°, then the torque required to drive the drill at a given feed will be more.
A. Equal to
B. Less than
C. More than
D. None of these
Answer : B

46. In a planer
A. Tool is stationary and work reciprocates
B. Work is stationary and tool reciprocates
C. Tool moves over stationary work
D. Tool moves over reciprocating work
Answer : A

47. The tool life is said to be over if
A. Poor surface finish is obtained
B. There is sudden increase in cutting forces and power consumption
C. Overheating and fuming due to heat of friction starts
D. All of the above
Answer : D

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

49. 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

50. 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