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Mechanical Engineering :: Machine Design

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Machine Design - Section 6
Machine Design - Section 7
Machine Design - Section 8

  1. The contact ratio for gears is

    2. A.

    zero
    B.

    less than one
    C.

    greater than one
    D.

    none of these

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  2. A feather key is generally

    3. A.

    loose in shaft and tight in hub
    B.

    tight in shaft and loose in hub
    C.

    tight in both shaft and hub
    D.

    loose in both shaft and hub

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  3. If the tearing efficiency of a riveted joint is 50%, then the ratio of diameter of rivet to the pitch is

    4. A.

    0.20
    B.

    0.30
    C.

    0.50
    D.

    0.70

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  4. The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

    5. A.

    1/2
    B.

    1
    C.

    2
    D.

    4

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  5. A riveted joint is a __________ fastening.

    6. A.

    permanent
    B.

    temporary

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