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Mechanical Engineering :: Production Engineering

  1. The enlarging of an existing circular hole with a rotating single point tool is called

  2. A.
    boring
    B.
    drilling
    C.
    reaming
    D.
    internal turning

  3. In the relation VTn = C, the value of n for high speed steel tools varies from 0.25 to 0.40.

  4. A.
    Agree
    B.
    Disagree

  5. Glazing in grinding wheels __________ cutting capacity.

  6. A.
    has no effect on
    B.
    increase
    C.
    decrease

  7. The usual value of the helix angle of a drill is

  8. A.
    20°
    B.
    30°
    C.
    45°
    D.
    60°

  9. The cutting speed for counter-boring should be __________ that of drilling operation.

  10. A.
    equal to
    B.
    less than
    C.
    greater than

  11. In drilling mild steel and brass, the point angle of a drill is 118°.

  12. A.
    True
    B.
    False

  13. The tail stock set over method of taper turning is preferred for

  14. A.
    internal tapers
    B.
    small tapers
    C.
    long slender tapers
    D.
    steep tapers

  15. The chuck preferred for quick setting and accurate centering of a job is

  16. A.
    four jaw independent chuck
    B.
    collect chuck
    C.
    three jaw universal chuck
    D.
    magnetic chuck

  17. Negative rakes are used for

  18. A.
    carbide tools
    B.
    heavy loads
    C.
    harder materials
    D.
    all of these

  19. A bottoming tap has

  20. A.
    its end tapered for about three or four threads
    B.
    its end tapered for about eight or ten threads
    C.
    full threads for the whole of its length
    D.
    none of the above