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  • Question
  • Sluice valves are fitted in a distribution system


  • Options
  • A. along straight length of pipes at suitable intervals
  • B. at the junctions of the pipes
  • C. at the branching off points of sub-mains
  • D. all the above.

  • Correct Answer
  • all the above. 


  • Water Supply Engineering problems


    Search Results


    • 1. To detect the turbidity of the order of 0 to 1000 P.P.M. the instrument used is

    • Options
    • A. turbidimeter
    • B. Jackson turbidimeter
    • C. Baylis turbidimeter
    • D. Hallige turbidimeter.
    • Discuss
    • 2. The period of cleaning of a slow sand filter, is usually

    • Options
    • A. 5 to 10 days
    • B. two weeks to three weeks
    • C. one month to three months
    • D. three months to six months
    • E. one year.
    • Discuss
    • 3. Flow through period, in sedimentation tanks, is

    • Options
    • A. equal to detention period
    • B. more than detention period
    • C. less than detention period
    • D. detention period divided by displacement efficiency
    • E. none of these.
    • Discuss
    • 4. Increase in population of a rapidly growing city, may be estimated by

    • Options
    • A. arithmetical mean method
    • B. geometrical method
    • C. incremental increase method
    • D. graphical comparison method.
    • Discuss
    • 5. A city supply includes

    • Options
    • A. domestic water demand
    • B. industrial and commercial water demands
    • C. demand for public uses and fire
    • D. water losses
    • E. all the above.
    • Discuss
    • 6. The lowest outlet sluice in a dam is provided

    • Options
    • A. below the dead storage
    • B. on the top level of dead storage
    • C. on the top level of useful storage
    • D. at the centre of the dam.
    • Discuss
    • 7. Mud balls may be removed by

    • Options
    • A. breaking and washing
    • B. washing the filter with a solution of caustic soda
    • C. removing, cleaning and replacing the damaged sand
    • D. all the above.
    • Discuss
    • 8. Pick up the correct statement from the following :

    • Options
    • A. Lime may be used to soften the hard water
    • B. Excessive use of lime may kill the bacterias
    • C. Excessive lime when added to water, raises its pH value
    • D. When lime raises pH value of water to about 9.5, 100% bacterias are removed
    • E. All the above.
    • Discuss
    • 9. For estimating the run off of catchments, the mean value of the constant 'K' in the Khosla's formula Qy = Py - K (1.8 Ty + 32) is

    • Options
    • A. 1.21
    • B. 1.23
    • C. 1.25
    • D. 1.27
    • E. 1.31
    • Discuss
    • 10. The bacterias which require free oxygen for their survival, are called

    • Options
    • A. Aerobic bacterias
    • B. Anaerobic bacterias
    • C. Faculative bacteria
    • D. None of these.
    • Discuss


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