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  • Question
  • For estimating the run off of catchments, the mean value of the constant 'K' in the Khosla's formula Qy = Py - K (1.8 Ty + 32) is


  • Options
  • A. 1.21
  • B. 1.23
  • C. 1.25
  • D. 1.27
  • E. 1.31

  • Correct Answer
  • 1.27 


  • Water Supply Engineering problems


    Search Results


    • 1. Pick up the correct statement from the following :

    • Options
    • A. Lime may be used to soften the hard water
    • B. Excessive use of lime may kill the bacterias
    • C. Excessive lime when added to water, raises its pH value
    • D. When lime raises pH value of water to about 9.5, 100% bacterias are removed
    • E. All the above.
    • Discuss
    • 2. Mud balls may be removed by

    • Options
    • A. breaking and washing
    • B. washing the filter with a solution of caustic soda
    • C. removing, cleaning and replacing the damaged sand
    • D. all the above.
    • Discuss
    • 3. The lowest outlet sluice in a dam is provided

    • Options
    • A. below the dead storage
    • B. on the top level of dead storage
    • C. on the top level of useful storage
    • D. at the centre of the dam.
    • Discuss
    • 4. Sluice valves are fitted in a distribution system

    • Options
    • A. along straight length of pipes at suitable intervals
    • B. at the junctions of the pipes
    • C. at the branching off points of sub-mains
    • D. all the above.
    • Discuss
    • 5. To detect the turbidity of the order of 0 to 1000 P.P.M. the instrument used is

    • Options
    • A. turbidimeter
    • B. Jackson turbidimeter
    • C. Baylis turbidimeter
    • D. Hallige turbidimeter.
    • Discuss
    • 6. The bacterias which require free oxygen for their survival, are called

    • Options
    • A. Aerobic bacterias
    • B. Anaerobic bacterias
    • C. Faculative bacteria
    • D. None of these.
    • Discuss
    • 7. The depth of the water table at a place is 45 m below the general ground level. To lift water from a deep tube well in such a locality, the type of pump to be installed is

    • Options
    • A. Centrifugal pump
    • B. Reciprocating pump
    • C. Deep well turbine pump
    • D. None of these.
    • Discuss
    • 8. The detention period for plain sedimentation water tanks, is usually

    • Options
    • A. 4 to 8 hours
    • B. 8 to 16 hours
    • C. 16 to 24 hours
    • D. 24 to 36 hours.
    • Discuss
    • 9. The population of a city in 2000 is 50, 000. The average per decade of the previous records of population is 5000 and average percentage per decade is 20%. The population of the city based on geometrical increase method, in the year 2020 will be

    • Options
    • A. 56, 000
    • B. 60, 000
    • C. 64, 000
    • D. 70, 000
    • E. 72, 000
    • Discuss
    • 10. 45 litres of water per person per day, is provided in

    • Options
    • A. office buildings
    • B. hotels
    • C. hostels
    • D. nurse's homes.
    • Discuss


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