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  • Question

  • The most important and widely used tube well in India, is


  • Options
  • A. strainer well
  • B. cavity well
  • C. slotted well
  • D. perforated pipe well.

  • Correct Answer
  • strainer well 

    • Water Supply Engineering problems

    Search Results

    • 1. The bacterias which may survive with or without free oxygen, are called

    • Options
    • A. Aerobic bacterias
    • B. Anaerobic bacterias
    • C. Faculative bacteria's
    • D. None of these.
      • Discuss
    • 2. The maximum permissible chloride content in treated water of public water supplies should not exceed

    • Options
    • A. 50 P.P.M.
    • B. 100 P.P.M.
    • C. 150 P.P.M.
    • D. 200 P.P.M.
    • E. 250 P.P.M.
      • Discuss
    • 3. In distribution pipes, air valves are provided at

    • Options
    • A. lower points
    • B. junction points
    • C. higher points
    • D. any where.
      • Discuss
    • 4. The total domestic consumption in a city water supply, is assumed

    • Options
    • A. 20%
    • B. 30%
    • C. 40%
    • D. 60%.
      • Discuss
    • 5. If average volume of sediment deposits is one-tenth million cubic metres per year in a reservoir of total capacity 10 million cubic metres, the dead storage will be filled up, in

    • Options
    • A. 10 years
    • B. 15 years
    • C. 20 years
    • D. 25 years
    • E. 50 years.
      • Discuss
    • 6. For a city developed haphazardly, the layout of distribution pipes preferred to, is

    • Options
    • A. ring system
    • B. radial system
    • C. grid iron system
    • D. dead end system.
      • Discuss
    • 7. Maximum permissible colour for domestic water supplies, based on Cobalt scale, is

    • Options
    • A. 5 P.P.M.
    • B. 10 P.P.M.
    • C. 15 P.P.M.
    • D. 20 P.P.M.
    • E. 25 P.P.M.
      • Discuss
    • 8. In centrifugal pump installation,

    • Options
    • A. pump is properly primed before starting
    • B. the diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe
    • C. the foot valve fitted at the bottom end of the suction pipe, prevents the movement of water from the pump when it is stopped
    • D. the motor may burn out if it is started with empty delivery pipe and with open gate valve
    • E. all the above.
      • Discuss
    • 9. Water is distributed to consumers by gravitational system, in

    • Options
    • A. Dehradun
    • B. Bombay
    • C. Delhi
    • D. Calcutta
    • E. Both (a) and (b).
      • Discuss
    • 10. For a network of distribution pipes of a proposed township shown in the below figure, the layout of distribution system, is

    • Options
    • A. dead end system
    • B. grid-iron system
    • C. ring system
    • D. radial system.
      • Discuss

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