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  • Question
  • The population growth curve is


  • Options
  • A. S-shaped curve
  • B. parabolic curve
  • C. circular curve
  • D. straight line
  • E. none of these.

  • Correct Answer
  • S-shaped curve 


  • Water Supply Engineering problems


    Search Results


    • 1. Corrosion of a pipe

    • Options
    • A. reduces its life span
    • B. reduces its carrying capacity
    • C. adds colour to water
    • D. adds odour to water
    • E. all the above.
    • Discuss
    • 2. Average annual rainfall at any station is the average of annual rainfall over a period of

    • Options
    • A. 7 years
    • B. 14 years
    • C. 21 years
    • D. 28 years
    • E. 35 years.
    • Discuss
    • 3. Manholes along the mains from the source to a city are provided at 500 m intervals in

    • Options
    • A. steel pipes
    • B. R.C.C. pipes
    • C. hume steel pipes
    • D. all the above.
    • Discuss
    • 4. In pressure supply mains, water hammer pressure is reduced by providing

    • Options
    • A. sluice valves
    • B. air valves
    • C. pressure relief valves
    • D. none of the these.
    • Discuss
    • 5. Corrosion of well pipes may not be reduced by

    • Options
    • A. reducing the draw down and the pumping rate
    • B. reducing the flow velocity
    • C. using thicker pipes
    • D. using screens having larger area of openings
    • E. none of these.
    • Discuss
    • 6. The least thickness of class B cast iron (spun) pipe, is

    • Options
    • A. 7.2 mm
    • B. 7.9 mm
    • C. 8.6 mm
    • D. 10 mm.
    • Discuss
    • 7. The transitional middle portion of a logistic curve follows

    • Options
    • A. a geometric growth
    • B. a logarithmic growth
    • C. a first over curve
    • D. a constant rate.
    • Discuss
    • 8. Most satisfactory formula for an estimate of fire demand Q for a city of population P in thousands for Indian conditions, is

    • Options
    • A.
    • B. Q = 1640 P (1 - 0.01 P)
    • C. Q = 3180 P
    • D. none of these.
    • Discuss
    • 9. Water supply system includes

    • Options
    • A. digging a well for water
    • B. construction of dams
    • C. construction of canals
    • D. entire arrangement from source to distribution.
    • Discuss
    • 10. Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be

    • Options
    • A. nil
    • B. 5
    • C. 10
    • D. 15
    • E. 20
    • Discuss


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