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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. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

    2. A.

    0.5r
    B.

    0.6r
    C.

    0.7r
    D.

    0.8r

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  2. The horizontal range of a projectile (R) is given by

    3. A.

    R = \(\frac { u^2 cos 2\alpha } { g }\)
    B.

    R = \(\frac { u^2 sin 2\alpha } { g }\)
    C.

    R = \(\frac { u^2 cos \alpha } { g }\)
    D.

    R = \(\frac { u^2 sin \alpha } { g }\)

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  3. Which of the following are vector quantities?

    4. A.

    Angular displacement
    B.

    Angular velocity
    C.

    Angular acceleration
    D.

    all of these

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  4. The maximum mechanical advantage of a lifting machine is

    5. A.

    1 + m
    B.

    1 - m
    C.

    1 / m
    D.

    m

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  5. A machine having an efficiency greater than 50%, is known as

    6. A.

    reversible machine
    B.

    non-reversible machine
    C.

    neither reversible nor non-reversible machine
    D.

    ideal machine

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