ELECTRIC DISCHARGE GRINDING MCQS

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ELECTRIC DISCHARGE GRINDING MCQS

  1. A cutting tool used to make a recess at the top of a drilled hole for a flat head machine screw is known as
  2. (a) a core drill
    (b) a spade drill
    (c) a reamer
    (d) an end mill
    (e) a countersink tool.

    a countersink tool.

  3. Which of the following drilling machine is not equipped with power feeds ?
  4. (a) sensitive drill press
    (b) multiple-spindle drilling machine
    (c) radial drilling machine
    (d) gang drilling machine
    (e) none pf the above.

    sensitive drill press

  5. When a number of single spindle drilling machine columns are placed side by side on a common work table, the machine is known as
  6. (a) radial drilling machine
    (b) gang drilling machine
    (c) multiple-spindle drilling machine
    (d) universal drilling machine
    (e) pillar type drilling machine.

    gang drilling machine

  7. The purpose of reaming is
  8. (a) for making a hole initially
    (b) to enlarge the diameter of the hole
    (c) to improve the finish of the hole
    (d) to achieve correct diameter
    (e) to correct location of hole.

    to improve the finish of the hole

  9. For reaming holes with solid reamers, reamer is mounted in
  10. (a) a rigid holder
    (b) a floating holder
    (c) a semi-rigid holder
    (d) a collet
    (e) universal holder.

    a floating holder

  11. Reamer is always held in
  12. (a) mandrel
    (b) floating chuck
    (c) collet chuck
    (d) self and centering chuck
    (e) universal chuck.

    mandrel

  13. Solid reamers do almost all their cutting with
  14. (a) flutes
    (b) bottom-most surface
    (c) 45° chamfered front end
    (d) none of the above,
    (e) all of the abovee

    45° chamfered front end

  15. The tool used to withdraw a drill from its sleeve i called
  16. (a) drift
    (b) allen key
    (c) drill puller
    (d) taper key
    (e) none of the above.

    drift

  17. The depth of a drilled hole is measured from the work surface to
  18. (a) the point made by the drill
    (b) the depth of the full diameter of the drill
    (c) a point midway between the point and full diameter
    (d) none of the above.
    (e) all of the above

    all of the above

  19. The function of flutes of the reamer is to
  20. (a) cut the metal
    (b) guide the reamer
    (c) slightly improve the finish
    (d) (6) and (c) above
    (e) none of the above.

    (6) and (c) above

  21. When drilling cast iron, the following coolant should be used
  22. (a) kerosene
    (b) lard oil
    (c) compressed air
    (d) water with soluble oil
    (e) none of the above.

    compressed air

  23. For reaming purposes, the diameter of drill hole upto size of 25 mm should be made smaller than the desired final size by
  24. (a) 0.01 mm
    (b) 0.05 mm
    (c) 0.1 mm
    (d) 0.5 mm
    (e) 1.0 mm.

    0.1 mm

  25. The cutting speed to be used in reaming a hole in comparison to speed used in drilling that hole should be
  26. (a) same
    (b) more
    (c) less
    (d) could be any speed
    (e) as large as possible.

    same

  27. The operation of threading a drilled hole is called
  28. (a) lapping
    (b) reaming
    (c) broaching
    (d) tapping
    (e) threading.

    tapping

  29. A fluted tool used to cut internal threads is called:
  30. (a) a tap
    (b) a chisel
    (c) a die
    (d) an end mill
    (e) spade drill.

    a tap

  31. Hand-tapping is an operation for generation o internal threadsThe number of taps generally usea for hand tapping are
  32. (a) 2
    (b) 1
    (c) 4
    (d) 3
    (e) depends on the diameter of the hole.

    3

  33. For making a chamfer on the edge of a hole, the following operation is required
  34. (a) counter sinking
    (b) spot facing
    (c) counter boring
    (d) reaming
    (e) wide drilling.

    counter sinking

  35. The chips formed in making threads by plug tap
  36. (a) get out through grooves
    (b) get out along with lubricant
    (c) get out through flutes
    (d) cannot get out
    (e) none of the above.

    get out through flutes

  37. A tap drill
  38. (a) is a special type of drill
    (b) does drilling and tapping operations simultaneously
    (c) is merely a convenient way to refer to the proper size drill to be used before using a tap
    (d) does not exist
    (e) none of the above.

    is merely a convenient way to refer to the proper size drill to be used before using a tap

  39. Nominal diameter ofa bolt or screw is
  40. (a) larger than the actual diameter
    (b) smaller than the actual diameter
    (c) same as the actual diameter
    (d) depends on the range in which actual diameter falls
    (e) none of the abovve.

    larger than the actual diameter

  41. Bottoming tap is used
  42. (a) for most of the threading applications
    (b) for threading in bottom surface
    (c) only for threading in blind holes
    (d) does not exists
    (e) none of the above.

    only for threading in blind holes

  43. Atool used in cutting and external thread is called a
  44. (a) twist drill
    (b) tap
    (c) die
    (d) end mill
    (e) half nut.

    die

  45. Following type of reamer is used for soft aluminium or copper
  46. (a) straight fluted
    (b) left hand spiral fluted
    (c) right hand spiral fluted
    (d) bottoming reamner
    (e) taper reamer.

    left hand spiral fluted

  47. Following type of reamer is used for blind hole
  48. (a) straight fluted
    (b) left hand spiral fluted
    (c) right hand spiral fluted
    (d) bottoming reamer
    (e) taper reamer.

    straight fluted

  49. Screw threads may be cut on a 10 mm diasteel rod by using
  50. (a) a circular split die
    (b) a set of taps
    (c) a drill and a reamer
    (d) as knurling tool
    (e) end mill.

    a circular split die

  51. Fluteless taps
  52. (a) are not round
    (b) form threads with no chips
    (c) do not exist
    (d) both (a) and (b)
    (e) none of the above

    both (a) and (b)

  53. For setting the heads of socket-head cap screw flushor below the surface, following operation is required
  54. (a) counter sinking
    (b) counter boring
    (c) reaming
    (d) spot facing
    (e) wide drilling.

    spot facing

  55. For tapping purpose, drilling is done by a drill which cuts a hole
  56. (a) of outside diameter of thread
    (b) of inside diameter of thread
    (c) of effective diameter of thread
    (d) which leaves only about 60-75% of depth of triangle to be taken out by tap
    (e) none of the above.

    which leaves only about 60-75% of depth of triangle to be taken out by tap

  57. In down milling cutter teeth and workpiece move in
  58. (a) same direction
    (b) opposite direction
    (c) perpendicular direction
    (d) tool moves down and work move up
    (e) work move down and tool moves up.

    same direction

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

    up milling

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