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Mechanical Engineering :: Machine Design

Machine Design - Section 1
Machine Design - Section 2
Machine Design - Section 3
Machine Design - Section 4
Machine Design - Section 5
Machine Design - Section 6
Machine Design - Section 7
Machine Design - Section 8

  1. An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

    2. A.

    increasing the length of bar
    B.

    decreasing the cross-sectional area of the bar
    C.

    decreasing the modulus of elasticity of the bar
    D.

    all of the above

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  2. The ratio of driving tensions in V-belt drives is __________ flat belt drives.

    3. A.

    equal to
    B.

    sin α times more than
    C.

    sin α times less than
    D.

    cosec α times more than

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  3. A shaft is designed on the basis of rigidity and stiffness.

    4. A.

    Correct
    B.

    Incorrect

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  4. Which of the following spring is used in mechanical wrist watch?

    5. A.

    Helical compression spring
    B.

    Spiral spring
    C.

    Torsion spring
    D.

    Bellevile spring

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  5. In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.

    6. A.

    intersecting
    B.

    non-intersecting and non-parallel

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