MACHANICS OF METAL CUTTING MCQS

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MACHANICS OF METAL CUTTING MCQS

MACHANICS OF METAL CUTTING MCQS

  1. The machining operation of cutting a key-way inside a drilled hole is known as
  2. (a) broaching
    (b) reaming
    (c) tapping
    (d) boring
    (e) counter sinking.

    broaching

  3. The process of trimming is associated with
  4. (a) electroplating
    (b) forging
    (c) polishing
    (d) machining
    (e) press work.

    press work.

  5. The numerical control system which is applicable to a milling machine is called the
  6. (a) point-to-point system
    (b) continuous path system
    (c) zig-zag machining system
    (d) straight cut-system
    (e) contouring system.

    continuous path system

  7. The broaching operation in which the work moves past the stationary tool is called
  8. (a) pull broaching
    (b) push broaching
    (c) surface broaching
    (d) continuous broaching
    (e) full broaching.

    surface broaching

  9. The point-to-point system of numerical control can be applied only to the conventional
  10. (a) drilling machine or jig boring operations
    (b) milling operations
    (c) shaper operations
    (d) lathes
    (e) grinder.

    drilling machine or jig boring operations

  11. The following machine should be specified when complex parts in short run quantities with variation have to be produced
  12. (a) copying
    (b) NC machine
    (c) transfer machine
    (d) electro-chemical milling machine
    (e) non-conventional machines.

    NC machine

  13. TAB code is used
  14. (a) to leave space between words
    (b) at the end of a block
    (c) to align the information properly on the type written copy
    (d) for staring fresh instruction
    (e) any one of the above.

    to align the information properly on the type written copy

  15. Relief or clearance angles on H.S.Stools usually vary from
  16. (a) 0 to 30°
    (b) 3 to 10°
    (c) 10 to 15°
    (d) 15 to 20°
    (e) 20 to 30°

    3 to 10°

  17. The purpose of providing relief or clearance angleson tools is to
  18. (a) permit chip formation
    (b) facilitate easy flow of chips
    (c) strain harden the material
    (d) strengthen the tool
    (e) prevent tool from rubbing on the work.

    prevent tool from rubbing on the work.

  19. High speed steel tools compared to carbon steel tools operate at
  20. (a) 2-3 times higher spee
    (b) same speed
    (c) 2-3 times lower speed
    (d) 3-5 times higher speed
    (e) 5-8 times higher speed.

    2-3 times higher spee

  21. The cutting speed of H.S.Smilling cutter to machine aluminium is
  22. (a) 50-80 m/mt
    (b) 25-40 m/mt
    (c) 100-160 m/mt
    (d) 180-240 m/mt
    (e) 240-400 m/mt.

    180-240 m/mt

  23. In starddle milling, following number of side milling cutters are mounted on the arbor
  24. (a) 1
    (b) 2
    (c) 3
    (d) 4
    (e) none of the above.

    2

  25. The following cutting fluid is used when milling with carbide tipped milling cutter
  26. (a) kerosene
    (b) lard oil
    (c) water
    (d) CO
    (e) dry.

    dry.

  27. Which of the following is not a multi-point cutting tool ?
  28. (a) drill
    (b) reamer
    (c) milling cutter
    (d) parting tool
    (e) grinding wheel.

    parting tool

  29. The included angle of taper in collet is usually
  30. (a) 44581
    (b) 44691
    (c) 30
    (d) 45
    (e) 60°

    30

  31. Which of the following machines utilise fly cutter?
  32. (a) lathe
    (b) planer
    (c) shaper
    (d) broaching
    (e) milling machine.

    milling machine.

  33. The positive radial rake angle in most of the high speed milling cutters is
  34. (a) – 5 to 0°
    (b) 0-5°
    (c) 5 10°
    (d) 10 – 15°
    (e) 15 – to 25°

    10 – 15°

  35. Pick up the correct statement for milling
  36. (a) cutter is rotated in the opposite direction of travel of job
    (b) thickness of chip is maximum at the beginning of cut
    (c) cutting force is directed downwards
    (d) coolant can be easily poured on the cutting edge
    (e) all of the above.

    cutter is rotated in the opposite direction of travel of job

  37. A right hand tool is one which is used to
  38. (a) start a cut from tailstock and cut toward the headstock
    (b) start a cut from head stock and cut toward the tailstock
    (c) start facing at the centre and cut outward
    (d) (a) and (c) above
    (e) (6) and (c) above.

    (a) and (c) above

  39. For turning mild steel, type of tool used is
  40. (a) left hand type
    (b) right hand type
    (c) any one of the two
    (d) depends on cutting angles and tool material
    (e) none of the above.

    left hand type

  41. Negative rakes are used for
  42. (a) harder materials
    (b) heavy loads
    (c) all of the above
    (d) carbide tools
    (e) none of the above.

    all of the above

  43. The helix angle of the teeth of a heavy duty plain milling cutter is of the order of
  44. (a) 0° to 5°
    (b) – 15° to 0°
    (c) 25° to 45°
    (d) 10° to 20°
    (e) 45° to 60°.

    25° to 45°

  45. Purpose of side rake is to
  46. (a) avoid work from rubbing against tool
    (b) strengthen tool edge
    (c) control chip flow
    (d) shear off the metal.
    (e) break chips

    control chip flow

  47. Relief angles on carbide tips are usually provided between
  48. (a) 5- 8°
    (b) 3-5°
    (c) 12 15
    (d) 3 12
    (e) 15-20°

    3-5°

  49. A grinding wheel gets glazed (shining cutting edges) due to
  50. (a) wear of abrasive grains
    (b) breaking up of abrasive grains
    (c) wear of bond
    (d) cracks of grinding wheel
    (e) embedding of fine chips and metal powder on wheel.

    wear of abrasive grains

  51. In grinding operation, for grinding softer materials
  52. (a) coarser grain size is used
    (b) fine grain size is used
    (c) medium grain size is used
    (d) any grain size may be used
    (e) none of the above.

    coarser grain size is used

  53. Maximum cutting angles are used for machiningg
  54. (a) cast iron
    (b) mild steel
    (c) free machining steels
    (d) aluminium alloys.
    (e) nickel alloy

    aluminium alloys.

  55. A work on the milling machine can be indexed by
  56. (a) universal milling attachment
    (b) chasing dial
    (c) dividing head attachment
    (d) manipulating vertical horizontal and movements
    (e) rotary tables.

    dividing head attachment

  57. In tool signature, nose radius is indicated
  58. (a) in the beginning
    (b) at the end
    (c) in the middle
    (d) not indicated
    (e) none of the above.

    at the end

  59. Reaming is the operation of
  60. (a) enlarging the end of a hole cylindrically
    (b) cone shaped enlargement of the end of a hole
    (c) smoothing and squaring the surface around a hole
    (d) sizing and finishing a hole
    (e) none of the above.

    sizing and finishing a hole

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Cover Topic

“introduction to metal cutting”,”basics of metal cutting”,”theory of metal cutting solved problems”

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