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Mechanical Engineering :: Machine Design

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Machine Design - Section 8

  1. In a steam engine, the piston rod is usually connected to the crosshead by means of a

    2. A.

    knuckle joint
    B.

    cotter joint
    C.

    oldham coupling
    D.

    universal joint

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  2. Lewis equation is applied

    3. A.

    only to the pinion
    B.

    only to the gear
    C.

    to stronger of the pinion or gear
    D.

    to weaker of the pinion or gear

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  3. A tap bolt has

    4. A.

    threads for the nut at one end and head at the other end
    B.

    head at one end and the other end fits into a tapped hole of one of the parts to be fastened
    C.

    threads at both ends
    D.

    pointed threads

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  4. According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the rivet hole (d) is obtained by

    5. A.

    equating tearing resistance of the plate to the shearing resistance of the rivets
    B.

    equating tearing resistance of the plate to the crushing resistance of the rivets
    C.

    equating shearing resistance to the crushing resistance of the rivets
    D.

    none of the above

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  5. A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

    6. A.

    partially
    B.

    fully

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