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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. In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

    2. A.

    0.5 times
    B.

    equal to
    C.

    \(\sqrt{2}\) times
    D.

    double

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  2. When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

    3. A.

    \(\frac { WD } { n _{d^3} } \times K\)
    B.

    \(\frac { 2 WD } { n _{d^3} } \times K\)
    C.

    \(\frac { 4 WD } { n _{d^3} } \times K\)
    D.

    \(\frac { 8 WD } { n _{d^3} } \times K\)

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  3. The product of the diametral pitch and module is equal to one.

    4. A.

    Correct
    B.

    Incorrect

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  4. The static tooth load should be __________ the dynamic load.

    5. A.

    equal to
    B.

    less than
    C.

    greater than

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  5. Power screws are used to convert rotary motion into translatory motion.

    6. A.

    True
    B.

    False

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