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  • Question

  • If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchment in square kilometres is A, the total run-off Q, is given by


  • Options
  • A. Q = 1.758 x 102 x API
  • B. Q = 2.758 x 102 x API
  • C. Q = 2.758 x 103 x API
  • D. If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchm
  • E.

  • Correct Answer
  • Q = 2.758 x 103 x API 

    • Water Supply Engineering problems

    Search Results

    • 1. A water channel supported above the ground over trestles, is generally called

    • Options
    • A. flume
    • B. canal
    • C. adueduct
    • D. tunnel
    • E. all the above.
      • Discuss
    • 2. The maximum hourly consumption, is generally taken as

    • Options
    • A. 110%
    • B. 120%
    • C. 130%
    • D. 140%
    • E. 150%.
      • Discuss
    • 3. While determining the yield of open wells by the pumping test

    • Options
    • A. velocity of recharging water, increases with depression head
    • B. depression head resulting at critical velocity, is called critical depression head
    • C. working head is generally limited to rd of the critical depression head
    • D. maximum safe yield of an open well, is expected at critical depression head.
      • Discuss
    • 4. Percussion drilling is unsuitable in

    • Options
    • A. unconsolidated sand
    • B. unconsolidated gravel
    • C. quick sand
    • D. consolidated rocks.
      • Discuss
    • 5. During treatment of water, sedimentation is done

    • Options
    • A. before filtration
    • B. after filtration
    • C. simultaneously with filtration
    • D. along with chlorination.
      • Discuss
    • 6. The superimposed load transmitted to the pipe, is generally evaluated by Bousiness formula

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. If G is the specific gravity of particles of diameter d, the velocity of settlement V in still water at T°C, according to Stoke's law, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. none of these.
      • Discuss
    • 8. The best quality of filter material is obtained from quartzite if it does not loose weight when placed in hydro-chloric acid for 24 hours, more than

    • Options
    • A. 5%
    • B. 8%
    • C. 10%
    • D. 12%
    • E. 15%.
      • Discuss
    • 9. The main disadvantage of hard water, is

    • Options
    • A. greater soap consumption
    • B. scaling of boilers
    • C. corrosion and incrustation of pipes
    • D. making food tasteless
    • E. all the above.
      • Discuss
    • 10. Pick up the correct statement from the following :

    • Options
    • A. A hydrograph is a plot of discharge versus time
    • B. A mass curve is a plot of accumulated flow versus time
    • C. The mass curve continuously rises
    • D. The slope of the mass curve at any time is a measure of the inflow rate at that time
    • E. All the above.
      • Discuss

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