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Mechanical Engineering :: Engineering Mechanics

Engineering Mechanics - Section 1
Engineering Mechanics - Section 2
Engineering Mechanics - Section 3
Engineering Mechanics - Section 4
Engineering Mechanics - Section 5
Engineering Mechanics - Section 6
Engineering Mechanics - Section 7

  1. In ideal machines, mechanical advantage is __________ velocity ratio.

    2. A.

    equal to
    B.

    less than
    C.

    greater than

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  2. The minimum force required to slide a body of weight W on a rough horizontal plane is

    3. A.

    W sin θ
    B.

    W cos θ
    C.

    W tan θ
    D.

    none of these

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  3. The moment of inertia of a square of side a about its diagonal is

    4. A.

    a2/8
    B.

    a3/12
    C.

    a4/12
    D.

    a4/16

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  4. The angular velocity (in rad / s) of a body rotating at N revolutions per minute is

    5. A.

    πN/60
    B.

    πN/180
    C.

    2πN/60
    D.

    2πN/180

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  5. The maximum efficiency of a lifting machine is

    6. A.

    1/m
    B.

    V.R./m
    C.

    m/V.R.
    D.

    1/(m x V.R.)

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