CLECTRO CHEMICAL MACHINING MCQS

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CLECTRO CHEMICAL MACHINING MCQS

CLECTRO CHEMICAL MACHINING MCQS

  1. In which type of milling operation, the chip is cut off at thinnest place and the chip thickness increases along chip length
  2. (a) down milling
    (b) up milling
    (c) climb milling
    (d) end milling
    (e) keyway milling.

    keyway milling.

  3. In which type of milling maximum friction is caused
  4. (a) down milling
    (b) up milling
    (c) climb milling
    (d) end milling
    (e) keyway milling.

    down milling

  5. In which milling operation, the cutting force tends to lift the workpiece
  6. (a) down
    (b) conventional
    (c) end
    (d) climb
    (e) form milling.

    conventional

  7. Any number of equal divisions can be obtained on milling machine by
  8. (a) simple indexing
    (b) plain indexing
    (c) compound indexing
    (d) differential indexing
    (e) any one of the above.

    compound indexing

  9. In finish grinding, the grinding ratio varies from
  10. (a) 1.0 to 5.0
    (b) 5.0 to 10.0
    (c) 10.0 to 25.0
    (d) 25.0 to 50.0
    (e) 50.0 to 100.0.

    5.0 to 10.0

  11. Grinding operation is used for
  12. (a) removing material
    (b) shaping
    (c) dressing
    (d) forming
    (e) finishing.

    removing material

  13. Grinding wheel is balanced
  14. (a) at the time of manufacture
    (b) before grinding
    (c) after grinding operation
    (d) frequently
    (e) none of the above or true.

    after grinding operation

  15. Which of the following processes would remove least material ?
  16. (a) grinding
    (b) lapping
    (c) honing
    (d) super-finishing
    (e) buffing.

    grinding

  17. Which of the following operations would be performed at maximum peripheral speed?
  18. (a) surface grinding
    (b) internal grinding
    (c) cylindrical grinding
    (d) grinding with rubber, shellac and resinoid bonded wheel
    (e) snagging off hand grinding with vitrified wheel

    snagging off hand grinding with vitrified wheel

  19. The process of precision grinding of part with loose dust type abrasives is known as
  20. (a) buffing
    (b) honing
    (c) lapping
    (d) superfinishing
    (e) polishing.

    superfinishing

  21. Majority of the grinding wheels use the followi of bond
  22. (a) silicate
    (b) resinoid
    (c) vitrified
    (d) shellac
    (e) rubber.

    vitrified

  23. Workpiece is supported as follows in cenin centreles grinding
  24. (a) on magnetic chucks
    (b) in collet chuck
    (c) in centre
    (d) none of the above,
    (e) in universal chuck

    in centre

  25. Buffing is the operation of
  26. (a) cleaning castings
    (b) depositing metal by spraying
    (c) broaching in reverse direction
    (d) producing luster on metal surface
    (e) preventing damage of metal by corrosion.

    cleaning castings

  27. The workpiece is advanced as follows in centrelese grinding
  28. (a) manually by operator
    (b) automatically by machine drive
    (c) on its own
    (d) force exerted by regulating wheel
    (e) force exerted by grinding wheel.

    force exerted by regulating wheel

  29. Grinding wheel is balanced frequently because of
  30. (a) high rpm
    (b) random wear
    (c) uneven wear
    (d) frequent glazing
    (e) high stresses.

    high rpm

  31. For grinding steel and alloy steel, following material of wheel should be chosena
  32. (a) aluminium oxide
    (b) silicon carbide
    (c) borazon
    (d) diamond
    (e) none of the above.

    diamond

  33. Pick up incorrect statement about centreless grinding
  34. (a) it is suitable for long jobs
    (b) rate of production as compared to cylindrical grinding is low
    (c) wear and tear of machine is less
    (d) cost of production as compared to cylindrical grinding is less
    (e) regulating wheel is usually rubber bonded.

    it is suitable for long jobs

  35. The regulating wheel in centreless grinding is usually
  36. (a) smaller than grinding wheel
    (b) bigger than grinding wheel
    (c) of same size as grinding wheel
    (d) smaller than workpiece
    (e) could be of any size.

    of same size as grinding wheel

  37. In centreless grinding machine, the maximum angular adjustment of following order is provided
  38. (a) 5°
    (b) 10°
    (c) 20°
    (d) 30°
    (e) 40°.

    20°

  39. For lapping operation, it is customary to leave only following amount of stock to be removed
  40. (a) 0.01 to 0.1 mm
    (b) 0.001 to 0.01 mm
    (c) 0.5 to 1.0 mm
    (d) 0.1 to 0.5 mmn
    (e) none of the above.

    0.01 to 0.1 mm

  41. Honing operation
  42. (a) can be used to change the location of hole or correct a sloped condition of a hole
    (b) can’t be used for the application in (a) above
    (c) above application is possible under some circumstances
    (d) above application depends upon the size of hole
    (e) none of the above.

    above application is possible under some circumstances

  43. For grinding cast iron, brass, aluminium, etcuse following material of wheel
  44. (a) aluminium oxide
    (b) silicon carbide
    (c) diamond
    (d) borazon
    (e) none of the above.

    diamond

  45. Accuracy of measuring equipment is
  46. (a) the closeness with which a measurement can be read directly from a measuring instrument
    (b) a measure of how close the reading is to the true S1ze
    (c) the difference between measured value and actual value
    (d) the smallest change in measurand that can be measured
    (e) the capability to indicate the same reading again and again for a given measurand.

    a measure of how close the reading is to the true S1ze

  47. Pressure applied on workpiece in case of lapping operation is
  48. (a) 0.01 kg/em
    (b) 0.1 kg/cm2
    (c) 0.5 kg/cm2
    (d) 1.0 kg/cm2
    (e) none of the above.

    0.01 kg/em

  49. Buffing process is used
  50. (a) to achieve flatness
    (b) to achieve roundness
    (c) to improve surface finish
    (d) to obtain very smooth reflective surfaces
    (e) not used in workshops.

    to achieve flatness

  51. The following is the process used for producing fine surface finish
  52. (a) shot peening
    (b) sintering
    (c) broaching
    (d) tumbling
    (e) swaging.

    tumbling

  53. Tumbling process
  54. (a) can be applied to any size, shape and material of workpiece
    (b) can be applied only to simple and uniform shaped workpieces
    (c) can be applied only to machine finished product
    (d) is not suitable for cast components
    (e) none of the above.

    is not suitable for cast components

  55. Precision of measuring equipment is
  56. (a) the closeness with which a measurement can be read directly from a measuring instrument
    (b) a measure of how close the reading is to the true S1ze
    (c) the difference between measured value and actual value
    (d) the smallest change in measurand that can be measured
    (e) the capability to indicate the same reading again and again for a given measurand.

    the smallest change in measurand that can be measured

  57. Which of the following can be used to scribe lines parallel to the edges of a part ?
  58. (a) screw gauge
    (b) vernier calipers
    (c) hermaphrodite caliper
    (d) divider
    (e) combination set.

    screw gauge

  59. A feeler gauge is used to check
  60. (a) screw pitch
    (b) radius
    (c) unsymmetrical shape
    (d) surface roughness
    (e) thickness of clearance.

    unsymmetrical shape

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