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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

  2. A.

    Q = Cd x a x \(\sqrt{2gh}\)

    B.

    Q = \(\frac { 2 } { 3 } C_d \times a \times h \)

    C.

    Q = \(\frac{C_d \times a}{\sqrt {2gh}}\)

    D.

    Q = \(\frac{3^{C_d \times a}}{\sqrt {2h}}\)

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  3. The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

  4. A.

    equal to

    B.

    less than

    C.

    more than

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  5. The difference between the notch and weir is that the notch is of bigger size and the weir is of a smaller size.

  6. A.

    Agree

    B.

    Disagree

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  7. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.

  8. A.

    equal to

    B.

    directly proportional

    C.

    inversely proportional

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  9. Euler's number is the ratio of __________ force to pressure force.

  10. A.

    inertia

    B.

    gravity

    C.

    viscous

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