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  • Question

  • For drains up to 15 cumecs, the depth d and width B are related by


  • Options
  • A. d = 0.2 B
  • B. d = 0.5 B
  • C. B = 0.2 d
  • D. B = 0.5 d.

  • Correct Answer
  • d = 0.5 B 

    • Waste Water Engineering problems

    Search Results

    • 1. The laying of sewers is done with

    • Options
    • A. magnetic compass
    • B. theodolite
    • C. level
    • D. clinometer
    • E. plane table.
      • Discuss
    • 2. Sewer manholes are generally provided at

    • Options
    • A. the change of gradient
    • B. the change of direction
    • C. the junctions of sewers
    • D. all of these.
      • Discuss
    • 3. The settlement of a particle in sedimentation tank, is affected by

    • Options
    • A. velocity of flow
    • B. viscosity of water
    • C. size and shape of solid
    • D. specific gravity of solid
    • E. all the above.
      • Discuss
    • 4. If the length of overland flow from the critical point to the mouth of drain is 13.58 km and difference in level between the critical point and drain mouth is 10 m, the inlet time is

    • Options
    • A. 2 hours
    • B. 4 hours
    • C. 6 hours
    • D. 8 hours.
      • Discuss
    • 5. If n is the rugosity coefficient, r is the hydraulic depth, s is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula evolved by

    • Options
    • A. Chezy
    • B. Manning
    • C. Bazin
    • D. Kutter.
      • Discuss
    • 6. Pathogens (or pathogentic bacterias) in water may cause

    • Options
    • A. typhoid
    • B. cholera
    • C. dysentery
    • D. infectious hepatitis
    • E. all the above.
      • Discuss
    • 7. No treatment of the sewage is given if dilution factor is

    • Options
    • A. less than 150
    • B. between 150 to 200
    • C. between 200 to 300
    • D. between 400 to 500
    • E. more than 500
      • Discuss
    • 8. The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called

    • Options
    • A. a heap
    • B. plateu
    • C. windrow
    • D. none of these.
      • Discuss
    • 9. For sewers, inverted siphon is provided for

    • Options
    • A. one pipe
    • B. two pipes
    • C. three pipes
    • D. four pipes.
      • Discuss
    • 10. If the pH value of sewage is 7

    • Options
    • A. it is acidic
    • B. it is alkaline
    • C. it is neutral
    • D. none of these.
      • Discuss

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