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Mechanical Engineering :: Engineering Mechanics

  1. The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is

  2. A.

    mr2/2

    B.

    mr2/4

    C.

    mr2/6

    D.

    mr2/8

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  3. In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

  4. A.

    P = W tan (α - φ)

    B.

    P = W tan (α + φ)

    C.

    P = W tan (φ - α)

    D.

    P = W cos (α + φ)

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  5. The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning.

  6. A.

    Correct

    B.

    Incorrect

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  7. A couple produces

  8. A.

    translatory motion

    B.

    rotational motion

    C.

    combined translatory and rotational motion

    D.

    none of the above

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  9. Energy may be defined as the capacity of doing work.

  10. A.

    Correct

    B.

    Incorrect

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