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  • Question

  • 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.

  • Correct Answer
  • D = 0.97 to 1.22 Q 

    • Water Supply Engineering problems

    Search Results

    • 1. 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
    • 2. High pH value of water does not produce

    • Options
    • A. incrustation
    • B. sediment deposits
    • C. turberculation
    • D. corrosion
    • E. both (c) and (d).
      • Discuss
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. 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
    • 7. Turbidity of water is expressed

    • Options
    • A. in ppm
    • B. in numbers in an arbitrary scale
    • C. by pH value
    • D. by colour code.
      • Discuss
    • 8. Recuperation test is carried out to determine

    • Options
    • A. turbidity of water
    • B. pH value of water
    • C. yield of well
    • D. discharge from a well.
      • Discuss
    • 9. The permissible amount of nitrites present in potable water, is

    • Options
    • A. 10 ppm
    • B. 15 ppm
    • C. 20 ppm
    • D. 45 ppm
    • E. Nil.
      • Discuss
    • 10. Before constructing a dam, the factor to be considered for controlling sedimentation, is

    • Options
    • A. selection of dam site
    • B. construction of check dams
    • C. providing vegetation screens
    • D. providing under-sluices in the dam
    • E. All the above.
      • Discuss

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