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Civil Engineering :: Water Supply Engineering

  1. Pick up the correct statement from the following :

  2. A.
    For determination of small colour intensities, tintometer is generally used
    B.
    The odour of water sample is generally measured by a term called odour intensity
    C.
    The colour of water sample may be detected by Nessler tube
    D.
    Specific conductivity of water measures the amount of dissolved salt
    E.
    All the above.

  3. Before constructing a dam, the factor to be considered for controlling sedimentation, is

  4. 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.

  5. The process of passing water through beds of granular materials, is called

  6. A.
    screening
    B.
    sedimentation
    C.
    filtration
    D.
    none of these.

  7. If Q is discharge is cubicmetres per sec and D is the economical diameter of the pipe. According to Lea

  8. 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.

  9. Water to the consumers may be supplied from

  10. A.
    infiltration galleries connected to sump well
    B.
    infiltration well dug out on the banks of rivers
    C.
    ranney wells sunk to the water level
    D.
    all the above.

  11. If the average daily demand of a city of 50, 000 population, is 20 m.l.d., the maximum daily demand is

  12. A.
    24 mld
    B.
    30 mld
    C.
    36 mld
    D.
    54 mld.

  13. Recuperation test is carried out to determine

  14. A.
    turbidity of water
    B.
    pH value of water
    C.
    yield of well
    D.
    discharge from a well.

  15. The discharge for the confined tube well is obtained from

  16. A.
    Thiem's formula
    B.
    Darcy's formula
    C.
    Tolman's formula
    D.
    Dupuits formula.

  17. Pick up the correct statement from the following :

  18. A.
    Air lift pumps are generally used for pumping water from deep wells
    B.
    Jet pumps are generally used for pumping water from small wells
    C.
    The hydraulic ram works on the principle of water hammer
    D.
    Rotary pumps are provided cams which rotate in opposite direction
    E.
    all the above.

  19. Turbidity of water is expressed

  20. A.
    in ppm
    B.
    in numbers in an arbitrary scale
    C.
    by pH value
    D.
    by colour code.