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Mechanical Engineering :: Machine Design

  1. Two concentric helical springs used to provide greater spring force are wound is opposite direction.

  2. A.

    True

    B.

    False

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  3. If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

  4. A.

    increases

    B.

    decreases

    C.

    remains unchanged

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  5. In cylindrical cams, the follower moves

  6. A.

    in a direction perpendicular to the cam axis

    B.

    in a direction parallel to the cam axis

    C.

    in any direction irrespective of cam axis

    D.

    along the cam axis

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  7. The included angle for the acme thread is 29°.

  8. A.

    True

    B.

    False

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  9. The process extensively used for making bolts and nuts is

  10. A.

    hot piercing

    B.

    extrusion

    C.

    cold peening

    D.

    cold heading

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