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Civil Engineering :: Hydraulics

  1. If a pitot tube is placed with its nose facing down stream, the liquid

  2. A.
    does not rise in the tube
    B.

    rises in the tube to a height  \(\sqrt\frac { V^2 } { 2g }\)

    C.

    falls in the tube to a depth \(\sqrt\frac { V^2 } { 2g }\)

    D.

    none of these.


  3.  

    The discharge through an internal mouth piece is more if its length is

  4. A.

    lessthan \(\frac { 1 } { 2 } \) diametet

    B.

    lessthan diametet

    C.

    greater than diametet

    D.
    none of these.

  5. A spherical load 900 kg is rolled through 9.8 m across the deck of a ship weighing 10, 000 kg. If the metacentric height of the ship is 5 metres, the angle of heel, is

  6. A.

    10° 5'

    B.

    10° 10'

    C.

    10° 15'

    D.

    10° 20'


  7. Pick up the correct statement from the following :

  8. A.

    In incompressible flow the density of a fluid remains constan

    B.

    In compressible flow, the density of a fluid changes from point to point

    C.

    In uniform flow, the velocity of a fluid does not change with respect to length of flow direction

    D.
    All the above.

  9.  

    Pick up the incorrect statement from the following :

  10. A.

    In radial flow, fluid flows such that pressure and velocity at any point change with respect to its distance from the central axis

    B.

    In radial flow, velocity of flow is in a radial direction

    C.
    In radial flow, flow may take place radially inward to or outward from the centre
    D.
    In radial flow, flow is one dimensional with stream lines parallel.

  11. Chezy's formula is used to determine

  12. A.

    head loss due to friction in pipe

    B.
    velocity of flow in pipe
    C.
    velocity of flow in open channels
    D.
    none of these.

  13. The metacentric height of a body equals the distance between

  14. A.

    the centre of gravity and centre of buoyancy

    B.

    the metacentre and centre of gravity

    C.
    the centre of buoyancy and metacentre
    D.
    none of these.

  15. Discharge through a totally submerged orifice, is directly proportional to

  16. A.

    difference in elevation of water surfaces

    B.

    square root of the difference in elevation of water surface

    C.

    square root of the opening

    D.

    reciprocal of the area of the opening

    E.

    none of these.


  17. Frictional loss of head includes the loss of energy due to

  18. A.

    viscosity

    B.

    turbulence

    C.

    both (a) and (b)

    D.

    none of these.


  19. The length of hydraulic jump is roughly

  20. A.

    2 to 3 times its height

    B.

    3 to 5 times its height

    C.
    5 to 7 times its height
    D.

    None of these.