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  • Question
  • Most important method for calculating discharge for planning a water supply project, is


  • Options
  • A. velocity area method
  • B. weir or spillway method
  • C. use of venturi-meter
  • D. using power plant consumption
  • E. none of these.

  • Correct Answer
  • velocity area method 


  • Water Supply Engineering problems


    Search Results


    • 1. Pick up the incorrect statement from the following :

    • Options
    • A. The water entering the slow sand filters should be treated by 9.386 coagulants
    • B. The depth of water on the filter should be twice the depth of the filter sand
    • C. When the filter head is 0.75 times the depth of filter sand, the water obtained is purest
    • D. The cleaning of slow sand filters is done by back washing
    • E. All the above.
    • Discuss
    • 2. m and n are monsoon duration factor and catchment factor respectively. If P is yearly rainfall in cm, runoff can be calculated by

    • Options
    • A. velocity area method
    • B. weir or spillway method
    • C. use of venturi-meter
    • D. using power plant consumption
    • E. none of these.
    • Discuss
    • 3. Rapid gravity filters can remove bacterial impurities up to a maximum of

    • Options
    • A. 50%
    • B. 60%
    • C. 70%
    • D. 80%
    • E. 90%.
    • Discuss
    • 4. The level of underground water is called

    • Options
    • A. water level
    • B. water table
    • C. negative level
    • D. invert level.
    • Discuss
    • 5. Higher yield may be expected from

    • Options
    • A. gravity springs
    • B. surface springs
    • C. artesian springs
    • D. all the above.
    • Discuss
    • 6. The percentage of chlorine in fresh bleaching powder is roughly

    • Options
    • A. 50 to 60
    • B. 30 to 35
    • C. 40 to 50
    • D. 20 to 25
    • Discuss
    • 7. By adding 1 ml of orthotolidine solution to 100 ml chlorinated water taken after contact period, the residual chlorine makes the colour of solution

    • Options
    • A. yellowish
    • B. greenish
    • C. bluish
    • D. reddish
    • E. violet.
    • Discuss
    • 8. Raw water treated with only chlorine, is known as

    • Options
    • A. plain chlorination
    • B. pre-chlorination
    • C. first-chlorination
    • D. de-chlorination
    • E. none of these.
    • Discuss
    • 9. For controlling algae, the most commonly used chemical, is

    • Options
    • A. copper sulphate
    • B. alum
    • C. lime
    • D. bleaching powder.
    • Discuss
    • 10. Run off is the quantity of water which flows

    • Options
    • A. in sewer pipes
    • B. due to leakage in pipes
    • C. in rivers
    • D. none of these.
    • Discuss


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