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Mechanical Engineering :: Production Engineering

  1. The cutting angle of a flat drill varies from

  2. A.
    3° to 8°
    B.
    20° to 30°
    C.
    60° to 90°
    D.
    90° to 120°

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  3. In electro-discharge machining, dielectric is used to

  4. A.
    help in the movement of the sparks
    B.
    control the spark discharges
    C.
    act as coolant
    D.
    all of these

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  5. In metal cutting operations, the shear angle is the angle made by the shear plane with the

  6. A.
    direction of the tool axis
    B.
    direction of tool travel
    C.
    perpendicular to the direction of the tool axis
    D.
    central plane of the workpiece

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  7. The floating position of the holding fixture in a rotary transfer device is used to

  8. A.
    improve the accuracy of location
    B.
    reduce the tendency to over-index
    C.
    improve upon the acceleration and deceleration characteristics
    D.
    reduce the cycle time

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  9. The operation of smoothing and squaring the surface around a hole is known as

  10. A.
    counter-sinking
    B.
    counter-boring
    C.
    trepanning
    D.
    spot facing

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  11. The cutting force in down milling is maximum when the tooth begins its cut and reduces to minimum when the tooth leaves the work.

  12. A.
    Correct
    B.
    Incorrect

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  13. The ductile materials, during machining, produce

  14. A.
    continuous chips
    B.
    discontinuous chips
    C.
    continuous chips with built up edge
    D.
    either (a) or (c)

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  15. Slow speed of the spindle is necessary in

  16. A.
    thread cutting
    B.
    turning a work of larger diameter
    C.
    turning a hard or tough material
    D.
    all of these

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  17. The hole drilled for tapping should be smaller than the tap size by twice the depth of thread.

  18. A.
    Agree
    B.
    Disagree

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  19. Relief angles on high speed steel tools usually vary from

  20. A.
    0° to 3°
    B.
    3° to 10°
    C.
    10° to 20°
    D.
    20° to 30°

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