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  • Question

  • Pick up the correct statement from the following :


  • Options
  • A. Water with hardness upto 75 ppm is considered soft
  • B. Water with hardness more than 200 ppm is considered hard
  • C. Water needed for laundaries should contain hardness less than 75 ppm
  • D. To provide taste during drinking, water should possess hardness between 75 to 120
  • E. All the above.

  • Correct Answer
  • All the above. 

    • Water Supply Engineering problems

    Search Results

    • 1. The fire demand for a city of 50, 000 population, according to Godrich formula, is

    • Options
    • A. 40 mld
    • B. 42 mld
    • C. 44 mld
    • D. 48 mld.
      • Discuss
    • 2. Cast iron pipes are generally preferred to, because

    • Options
    • A. of moderate cost
    • B. of ease to join
    • C. of durability
    • D. of longer life
    • E. all the above.
      • Discuss
    • 3. Pressure exerted at 90° bend in a pipe of cross-sectional area A and carrying water with a velocity V under a pressure p, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. The valve shown in the below figure, is generally known as

    • Options
    • A. air valve
    • B. pressure relief valve
    • C. sluice valve
    • D. none of these.
      • Discuss
    • 5. Water gets evaporated from water surfaces and land surfaces, get converted into water drops at lower temperatures, flows over ground surface and finally meets its source, i.e. lake, sea, etc. This entire process is generally known as

    • Options
    • A. hydrological cycle
    • B. water cycle
    • C. evaporation and precipitation cycle
    • D. all the above.
      • Discuss
    • 6. Most commonly used section in grade aqueducts, is

    • Options
    • A. circular
    • B. rectangular
    • C. parabolic
    • D. horse shoe section.
      • Discuss
    • 7. Specific capacity or yield of wells, is generally expressed, as

    • Options
    • A. m3 per sec
    • B. m3/hour
    • C. m3/hour/m2
    • D. m3/hour/m2/m
    • E. m3/hour/m2/sec.
      • Discuss
    • 8. The type of pipe commonly used in water supply distribution schemes, is

    • Options
    • A. R.C.C. pipes
    • B. Hume pipes
    • C. Cast iron pipes
    • D. G.I. pipes.
      • Discuss
    • 9. Most important source of water for public water supply, is from

    • Options
    • A. lakes
    • B. ponds
    • C. streams
    • D. rivers
    • E. sea.
      • Discuss
    • 10. 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

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