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Civil Engineering :: Hydraulics

Hydraulics - Section 1
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Hydraulics - Section 3
Hydraulics - Section 4
Hydraulics - Section 5
Hydraulics - Section 6

  1. The value of momentum correction factor (β) for a laminar flow through a circular pipe, is
    2. A.

    1/2
    B.

    2/3
    C.
    3/4
    D.

    4/3
    E.
    3/2

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  2. Manometers are used to measure

    3. A.

    pressure in water channels, pipes etc.
    B.

    difference in pressure at two points
    C.

    atmospheric pressure
    D.

    very low pressure.

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  3. For maximum horse power of a nozzle, the head supplied must be equal to

    4. A.

    head loss in the pipe due to friction
    B.

    twice the head loss in the pipe due to friction
    C.

    thrice the head loss in the pipe due to friction
    D.

    four times the head loss in the pipe due to friction.

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  4. The ratio of frictional factor and coefficient of friction used in general equation for a head loss in a pipe, is
    5. A.

    1
    B.

    2
    C.

    3
    D.

    4

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  5. Flow in pipes is turbulent if Reynold number is
    6. A.

    less than 2100
    B.

    more than 3000
    C.

    between 2100 and 3000
    D.

    none of these.

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  6. Back water curve is caused if

    7. A.

    friction head loss is more than the bed slope
    B.

    pressure is due to weir in the channel
    C.

    there is an increase in width of the channel
    D.

    none of these.

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  7. Power transmitted through a pipe is maximum when friction head loss, is

    8. A.

    one-half of the total head supplied
    B.
    one-third of the total head supplied
    C.

    one-fouth of the total head supplied
    D.

    equal to the total head supplied.

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  8. The specific weight of water is 1000 kg/m3

    9. A.

    at normal pressure of 760 mm
    B.

    at 4°C temperature
    C.

    at mean sea level
    D.

    all the above.

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  9. Specific weight of liquid

    10. A.

    remains constant at every place
    B.

    does not remain constant at every place
    C.
    varies from place to place on the earth
    D.

    does not vary on any other planet.

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  10. Manning's formula is used for
    11. A.

    flow in open channels
    B.

    head loss due to friction in open channels
    C.

    head loss due to friction in pipes flowing full
    D.

    flow in pipes.

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