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Civil Engineering :: Water Supply Engineering

  1. Disappearance of pink colour of water of a well due of KMnO4 indicates that water contains

  2. A.
    acidity
    B.
    alkalinity
    C.
    turbidity
    D.
    organic matter
    E.
    all the above.

  3. Shales are

  4. A.
    porous
    B.
    permeable
    C.
    porous and permeable
    D.
    porous but not permeable
    E.
    neither porous nor permeable.

  5. Water is distributed to consumers by gravitational system, in

  6. A.
    Dehradun
    B.
    Bombay
    C.
    Delhi
    D.
    Calcutta
    E.
    Both (a) and (b).

  7. Grade aqueducts are not allowed to run

  8. A.
    full
    B.
    th full
    C.
    full
    D.
    th full.

  9. The type of joint generally used in cast iron pipes, is

  10. A.
    socket and spigot joint
    B.
    flanged joint
    C.
    dresser coupling joint
    D.
    flexible joint
    E.
    all the above.

  11. Growth of population can be conveniently represented by

  12. A.
    an arithmetical curve
    B.
    a semi-logarithmic curve
    C.
    a logistic curve
    D.
    a straight line curve
    E.
    all the above.

  13. In a well planned city, the layout of distribution pipes generally adopted, is

  14. A.
    grid-iron system
    B.
    interlaced system
    C.
    reticulation system
    D.
    all the above.

  15. Air valves are generally provided in pressure pipes of water supply

  16. A.
    at pipe junctions
    B.
    at summits
    C.
    at low points
    D.
    near service pipes.

  17. Pick up the correct statement from the following :

  18. A.
    The water level in a still well, represents the ground water table level
    B.
    The difference between water table level and the water level in a well after pumping, is called depression head
    C.
    The surface of water table surrounding a well during pumping, forms a cone of depression
    D.
    The distance from the centre of the well up to the place where level of water table is not affected, is called radius of influence
    E.
    All the above.

  19. Bacterias which can survive with or without free oxygen, are known

  20. A.
    aerobic bacterias
    B.
    anerobic bacterias
    C.
    facultative bacterias
    D.
    none of these.