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Civil Engineering :: Hydraulics

  1. Hydraulic radius is equal to

  2. A.

    area divided by the square of wetted perimeter

    B.

    area divided by wetted perimeter

    C.

    wetted perimeter divided by area

    D.

    square root of the area.

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  3. The discharg formula Q = Cd \(\sqrt2gH{}\)A is used for rectangular

  4. A.
    small orifices only
    B.

    large orifices only

    C.

    small and large orifices only

    D.

    for all types of orifices.

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  5.  

    Chezy's constant C = \( \frac { 157.6 } { 1.81+k/\sqrt{m} } \) is suggested by 

  6. A.

    Bazin

    B.
    Kutter
    C.

    Manning

    D.
    Powell.

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  7.  

    The acceleration f required to accelerate a rectangular tank containing water horizontally so that the slope of its free surface is 45°, is

  8. A.

    g/2

    B.

    g

    C.

    g

    D.

    2.5 g

    E.

    g.

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  9. Pick up the correct statement from the following :

  10. A.

    The fluids which follow t = \(\frac { dV } { dY } \)are known as Newtonian fluids

    B.

    The fluids which do not follow the linear relationship between shear and rate of strain are known as non Newtonian fluids

    C.

    The substances which flow after yield strains, are known as plastics

    D.

    all the above.

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  11. For solving network problems of pipes, necessary condition is

  12. A.

    continuity equation

    B.

    energy equation

    C.

    Darcy-Weisbach equation

    D.

    all the above.

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  13.  

    In a fluid flow a particle may posses

  14. A.

    elevation energy

    B.

    kinetic energy

    C.

    pressure energy

    D.

    initial energy

    E.

    all the above.

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  15. In two dimensional flow the components of velocity are given by u = axv = by. The stream lines will be

  16. A.

    circular

    B.
    parabolic
    C.
    hyperbolic
    D.
    elliptical.

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  17. The discharge through a V-notch weir varies as

  18. A.

    \(\sqrt{H}\)

    B.

    \(\sqrt{H}\)

    C.

    \( H^3/2\)

    D.

    \( H^7/2\)

    E.

    \( H^5/2\)

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  19.  

    The instrument used for measuring the velocity of flow, is known as

  20. A.

    venturimeter

    B.

    orifice meter

    C.
    pitot tube
    D.

    none of these.

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