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Civil Engineering :: Hydraulics

  1.  

    If CvCcCd and Cr are the hydraulic coefficients of an orifice, then

  2. A.

    Cd = Cc . Cv

    B.

    Cr = 1 + Cv2/Cd

    C.

    Cv = Cc + Cd

    D.
    Cc = Cv/Cd

  3. Atmospheric pressure varies with

  4. A.

    altitude

    B.
    temperature
    C.

    weather conditions

    D.

    all of the above.


  5. The magnitude of water hammer in a pipe depends upon

  6. A.

    speed at which value is closed

    B.

    length of the pipe line

    C.

    elastic properties of the pipe material

    D.

    elastic properties of the following liquid

    E.
    all the above.

  7. If velocities of fluid particles vary from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

  8. A.

    laminar

    B.

    turbulent flow

    C.

    uniform flow

    D.

    non-uniform flow.


  9. The rise of the liquid along the walls of a revolving cylinder above the initial level, is

  10. A.

    greater than the depression of the liquid at the axis of rotation

    B.

    lesser than the depression of the liquid at the axis of rotation

    C.
    the same as the depression of the liquid at the axis of rotation
    D.

    none of these.


  11. Fluids change the volume under external presssure due to

  12. A.

    plasticity

    B.
    viscosity
    C.

    compressibility

    D.
    none of these.

  13. Discharge over an ogee weir remains the same as that of

  14. A.

    sharp crested weir

    B.
    triangular weir
    C.

    cippoletti weir

    D.

    cippoletti weir


  15. When no air is left below the nappe and water stream adheres to the down stream face of the weir, it is known as

  16. A.

    free nappe

    B.

    depressed nappe

    C.

    clinging nappe

    D.

    none of these.


  17. The best side slope for most economical trapezoidal section, is

  18. A.

    30°

    B.
    45°
    C.
    60°
    D.

    None of these.


  19. The following is not a laminar flow

  20. A.

    Flow of oil in measuring instruments

    B.

    Flow in beds in ground water

    C.

    Rise of water in plants through roots

    D.

    Flow of blood in the arteries of human body

    E.

    Flow in water pipe lines.