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Civil Engineering :: Hydraulics

  1. The dimensions MLT-2 refers to

  2. A.
    specific weight
    B.

    force

    C.

    discharge

    D.

    none of these.

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  3. The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit, is known as

  4. A.

    hydraulic gradient

    B.

    piezometric line

    C.

    pressure grade line

    D.

    hydraulic grade line

    E.

    all the above.

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  5. Practical fluids possess

  6. A.

    viscosity

    B.

    surface tension

    C.

    compressibility

    D.

    all the above.

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  7. The depth of the centre of pressure on a vertical rectangular gate (4 m wide, 3 m high) with water upto top surface, is

  8. A.

    1.0 m

    B.

    1.5 m

    C.
    2.0 m
    D.

    2.5 m.

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  9. The differential equation dp/ρ + gdz + vdv = 0 for a fluid motion is suggested by

  10. A.

    Bernoulli

    B.

    Cauchy-Riemann

    C.

    Laplace

    D.

    Leonard Euler.

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  11.  

    An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom w

  12. A.

    greater than static pressure

    B.

    equal to static pressure

    C.

    lesser than static pressure

    D.

    none of these.

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  13.  

    For uniform flow in canals

  14. A.

    there is a balance between the frictional loss and drop in elevation of the channel

    B.

    bed and free water surfaces of a channel are parallel to each other

    C.
    bed of channel represents the hydraulic gradient
    D.

    all the above.

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  15. If H is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is

  16. A.
    0.1 H
    B.

    0.2 H

    C.

    0.3 H

    D.
    0.4 H
    E.
    0.5 H.

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  17.  

    Pick up the correct statement from the following :

  18. A.

    For maximum velocity of flow, the depth of water in the circular channel must be 0.81 times the diameter of the channel

    B.

    For maximum velocity, the hydraulic mean depth must be 0.3 times the diameter of circular channel

    C.

    For maximum discharge the depth of flow must be 0.95 times the diameter of circular channel

    D.
    All the above.

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  19. The velocity of flow (v) at the outlet of a syphon of length l, is given by

  20. A.

     V =  \(\frac { \sqrt{gh} } { 1.5+4fld } \)

    B.

     v = \(\sqrt\frac { {2gh} } { 1.5+4fld } \)

    C.

     v = \(\sqrt\frac { 1.5+4fld\ } { 2gh } \)

    D.

    v = \(\sqrt\frac { 1.5+4fld\ } { gh } \)

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