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Civil Engineering :: Water Supply Engineering

  1. Dead storage of a reservoir of Q capacity generally provided for silt deposition during its life time, is generally kept

  2. A.
    1/8th Q
    B.
    1/6th Q
    C.
    1/5th Q
    D.
    1/4th Q
    E.
    1/3rd Q.

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  3. If the specific capacity of a well is 0.3183 x 10-3 per sec, the discharge from a well of 4 m diameter under a depression head of 4 m, is

  4. A.
    8 litres/sec
    B.
    10 litres/sec
    C.
    12 litres/sec
    D.
    14 litres/sec
    E.
    16 litres/sec.

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  5. The factor to be considered for the source of city water supply, is

  6. A.
    quantity and quality of the available water
    B.
    elevation of the source of water
    C.
    general terrain intervening the area
    D.
    all the above.

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  7. Pick up the correct statement from the following :

  8. A.
    Domestic use of water is 50% of total consumption
    B.
    Average consumption of commercial use of water is 25% of total consumption
    C.
    Consumption of water on public use is 10% of total consumption
    D.
    Waste water and leakage is 15% of total consumption
    E.
    all the above.

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  9. Yield of a drainage basin is :

  10. A.
    run off of the area expressed as instantaneous rate
    B.
    average run off over a short period
    C.
    total volume of water flowing annually
    D.
    all the above.

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  11. Normal values of overflow rate for plain sedimentation tank using coagulants, is

  12. A.
    750 to 1000 litres/hr/m2
    B.
    1000 to 1250 litres/hr/m2
    C.
    1250 to 1500 litres/hr/m2
    D.
    1500 litres/hr/m2.

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  13. The formula Q = P - K[1.8T + 32] in which Q is runoff, P is annual rain fall in cm, T is mean annual temperature in centigrades and K is a constant, is known

  14. A.
    Justin's formula
    B.
    Khosla's formula
    C.
    English formula
    D.
    Vermule's formula.

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  15. The formula for pipe flows, suggested by, Hazen-William is

  16. A.
    B.
    V = 0.85 CH R0.63 . S0.54
    C.
    D.
    None of these.

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  17. While selecting the location of an intake for collecting surface water, the factor considered, is

  18. A.
    The intake point should be near as far as possible to the treatment plant
    B.
    The intake point should be in purer zone of the water source
    C.
    The intake point should be upstream of the point of disposal of waste water
    D.
    The intake point in meandering rivers should be on concave banks
    E.
    All the above;

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  19. Aqueducts are generally designed

  20. A.
    circular
    B.
    rectangular
    C.
    horse shoe section
    D.
    all the above.

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