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Water Supply Engineering problems

  • 1. Most important source of water for public water supply, is from

  • Options
  • A. lakes
  • B. ponds
  • C. streams
  • D. rivers
  • E. sea.
    • Discuss
  • 2. The maximum pressure to which cast iron pipes may be subjected to, is

  • Options
  • A. 3 kg/cm2
  • B. 5 kg/cm2
  • C. 7 kg/cm2
  • D. 10 kg/cm2.
    • Discuss
  • 3. If the chosen diameter of a pipe, is less than the economical diameter

  • Options
  • A. cost of pipe will be less
  • B. head loss will be high
  • C. cost of pumping will be more than saving
  • D. all the above.
    • Discuss
  • 4. When the reduced level of the water source is higher than the reduced level of the consumer's place, water is generally supplied

  • Options
  • A. by pumping system
  • B. by gravitational system
  • C. both (a) and (b)
  • D. all the above.
    • Discuss
  • 5. The fire demand for ascertaining the empirical formula Civil Engineering Water Supply Engineering: The fire demand for ascertaining the empirical formula known as

  • Options
  • A. Kuichling's formula
  • B. Buston's formula
  • C. Freeman formula
  • D. Under Writers formula
  • E. None of these.
    • Discuss
  • 6. The prescribed hardness limit of potable water ranges between

  • Options
  • A. 50 to 75 P.P.M.
  • B. 75 to 115 P.P.M.
  • C. 100 to 150 P.P.M.
  • D. 150 to 200 P.P.M.
  • E. none of these.
    • Discuss
  • 7. High pH value of water does not produce

  • Options
  • A. incrustation
  • B. sediment deposits
  • C. turberculation
  • D. corrosion
  • E. both (c) and (d).
    • Discuss
  • 8. According to Buston's formula, fire demand in litres per minute for a population of P thousands, is

  • Options
  • A. 3182 P
  • B.
  • C. 4637 P (1 - 0.01 P)
  • D. 5663 P
  • E. none of these.
    • Discuss
  • 9. If Q is discharge is cubicmetres per sec and D is the economical diameter of the pipe. According to Lea

  • Options
  • A. D = 0.67 to 0.87 Q
  • B. D = 0.77 to 0.97 Q
  • C. D = 0.97 to 1.22 Q
  • D. D = 1.22 to 1.33 Q.
    • Discuss
  • 10. Detention period of a settling tank is

  • Options
  • A. average theoretical time required for water to flow through the tank
  • B. time required for flow of water to fill the tank fully
  • C. average time for which water is retained in tank
  • D. ratio of volume of basin of a sedimentation tank to the rate of flow
  • E. all the above.
    • Discuss

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