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  • Question
  • Water is supplied from the source to the treatment plant under gravity in


  • Options
  • A. Calcutta
  • B. Delhi
  • C. Madras
  • D. Bombay.

  • Correct Answer
  • Bombay. 


  • Water Supply Engineering problems


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    • 1. Derivation of Thiem's formula
      is based on the assumption

    • Options
    • A. the aquifer is homogeneous, isotropic and of infinite depth and area
    • B. the well is sunk through the full depth of the aquifer
    • C. the flow lines are radial and horizontal, and the flow is laminar
    • D. for hydraulic gradient in Darcy's equation, tangent value is used for sine value
    • E. all the above.
    • Discuss
    • 2. In a reservoir the average volume of sediment deposition is 0.15 million cubic per year. If the dead storage and total capacity of the reservoir are 8 million cubic metres and 36 million cubic metres respectively,

    • Options
    • A. the reservoir will theoretically be silted in 240 years
    • B. the reservoir will start reducing after 60 years
    • C. both (a) and (b)
    • D. neither (a) nor (b).
    • Discuss
    • 3. The formula for the head loss in conduits is generally known as

    • Options
    • A. Hazen-William's formula
    • B. Manning's formula
    • C. Darcy-Weisbach formula
    • D. Nikuradse formula.
    • Discuss
    • 4. Disinfection of drinking water is done to remove

    • Options
    • A. turbidity
    • B. odour
    • C. colour
    • D. bacterias
    • E. all the above.
    • Discuss
    • 5. The external load per unit length of

    • Options
    • A. a pipe laid on, or projecting above the undisturbed ground and covered with fills, is proportional to the square of the external diameter of the pipe
    • B. a flexible pipe burried in narrow trenches and thoroughly compacted side fills, is proportional to the product of the width of the trench and diameter of the pipe
    • C. a rigid pipe burried in a narrow trenches and thoroughly compacted side fills, is proportional to the square of the width of the trench
    • D. all the above.
    • Discuss
    • 6. The most ideal disinfectant used for drinking water throughout the world, is

    • Options
    • A. alum
    • B. lime
    • C. chlorine
    • D. nitrogen
    • E. ammonia.
    • Discuss
    • 7. Pick up the correct statement from the following :

    • Options
    • A. Head loss in smaller size pipes at equal velocities, is less
    • B. Cost of pumping is less in smaller size pipes
    • C. Cost of smaller pipes is comparatively more
    • D. None of these.
    • Discuss
    • 8. Pick up the incorrect statement from the following. In take of water supply should

    • Options
    • A. be nearer to the treatment plant
    • B. receive water from purer zone of the source
    • C. be located downstream of waste water disposal point
    • D. remain easily accessible during floods.
    • Discuss
    • 9. Filtration of water is done to remove

    • Options
    • A. colour
    • B. odour
    • C. turbidity
    • D. pathogenic bacteria
    • E. all the above.
    • Discuss
    • 10. Permanent hardness of water can be removed by

    • Options
    • A. adding alum
    • B. adding lime
    • C. adding chlorine
    • D. boiling
    • E. zeolite process.
    • Discuss


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