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Civil Engineering :: Water Resources Engineering

  1. The Dupuit formula is based on

  2. A.
    one observation well
    B.
    two observation wells
    C.
    three observation wells
    D.
    no observation well
    E.
    none of these.

  3. A well is sunk in an unconfined aquifer having a saturated depth of 100 m. Assuming the equilibrium flow conditions and a homogeneous aquifer and radius of influence to be same, the ratio of discharges at 20 m and 40 m draw downs, is

  4. A.
    2/3
    B.
    5/4
    C.
    4/5
    D.
    7/8
    E.
    8/7

  5. Evaporation losses depend upon

  6. A.
    area of the water surface and depth of the water
    B.
    nature of precipitation and type of vegetation
    C.
    humidity and wind velocity
    D.
    atmospheric temperature
    E.
    all the above.

  7. Phytometer method is generally used for the measurement of

  8. A.
    interception
    B.
    evaporation
    C.
    transpiration
    D.
    none of these.

  9. In the estimate of design flood, Dickens assumes that high flood in cumecs, is proportional to catchment area raised to the power


  10. For high flood estimates the average value of the constant C in Dicken's formula Q = CA3/4, is

  11. A.
    6.5
    B.
    8.5
    C.
    9.5
    D.
    10.5
    E.
    11.5

  12. Pettis formula Q = C (P.B)5/4 cumecs, is based upon

  13. A.
    rainfall and drainage area
    B.
    run off and drainage area
    C.
    drainage area and its shape
    D.
    drainage area.

  14. Boston society of Civil Engineer's formula in cumecs/square km is based upon

  15. A.
    rainfall and drainage area
    B.
    total run off and drainage area
    C.
    drainage area and its shape
    D.
    drainage area.

  16. For predicting floods of a given frequency, the best reliable method is

  17. A.
    Unit hydrograph method
    B.
    Gumbel's analytical method
    C.
    California method
    D.
    None of these.

  18. The earthen embankments constructed parallel to the river banks at some suitable distance for flood control, are known as

  19. A.
    floods walls
    B.
    river walls
    C.
    levees
    D.
    dikes
    E.
    both (c) and (d).