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Civil Engineering :: Water Supply Engineering

  1. At the socket and spigot joint,

  2. A.
    enlarged end of the pipe is called socket
    B.
    normal end of the pipe is called spigot
    C.
    spigot is fitted into the socket
    D.
    molten lead is used for water proofing
    E.
    all the above.

  3. Gravity conduits for carrying water from the source are

  4. A.
    canals
    B.
    flumes
    C.
    acqueducts
    D.
    all the above.

  5. Continuous flow of water can be expected from

  6. A.
    gravity springs
    B.
    surface springs
    C.
    artesian springs
    D.
    none of these.

  7. The maximum hourly consumption, is generally taken as

  8. A.
    110%
    B.
    120%
    C.
    130%
    D.
    140%
    E.
    150%.

  9. A city supply includes

  10. A.
    domestic water demand
    B.
    industrial and commercial water demands
    C.
    demand for public uses and fire
    D.
    water losses
    E.
    all the above.

  11. During treatment of water, sedimentation is done

  12. A.
    before filtration
    B.
    after filtration
    C.
    simultaneously with filtration
    D.
    along with chlorination.

  13. E. Coli bacterias die in water having pH greater than

  14. A.
    5.5
    B.
    6.5
    C.
    7.5
    D.
    8.5
    E.
    9.5

  15. Check valves are installed

  16. A.
    on the delivery side of the pumping set
    B.
    at the interconnections between polluted water system and a potable water system
    C.
    both (a) and (b)
    D.
    neither (a) nor (b).

  17. The equation in which Q is yearly run off in cm, P is yearly total rainfall in cm, H is difference of R.L.s. of lowest and highest points and A is area of catchment in square metres, is known as

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

  19. If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchment in square kilometres is A, the total run-off Q, is given by

  20. A.
    Q = 1.758 x 102 x API
    B.
    Q = 2.758 x 102 x API
    C.
    Q = 2.758 x 103 x API
    D.
    E.