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Civil Engineering :: Irrigation Engineering

  1. Tortuosity of a meandering river is always

  2. A.

     equal to 1

    B.

     less than 1

    C.

     greater than 1

    D.

     less than or equal to 1


  3. The discharge passing over an ogee spillway is given by (where, L is effective length of spillway crest and H is the total head over the spillway crest including velocity head.)

  4. A.

     CLH3/2

    B.

     CHL3/2

    C.

     CLH5/2

    D.

     CLH1/2


  5. The measure to remove water logging of land, is

  6. A.

     To reduce percolation from canals and water courses

    B.

     To increase outflow from the ground water reservoir

    C.

     Both (A) and (B)

    D.

     Neither (A) nor (B)


  7. A hydraulic structure is designed to withstand

  8. A.

     Seepage forces

    B.

     Hydraulic jump

    C.

     Hydraulic pressure

    D.

     All the above


  9. Attracting groynes are built

  10. A.

     Perpendicular to the bank

    B.

     Inclined down stream

    C.

     Inclined up stream

    D.

     None of these


  11. A unit hydro graph has one unit of

  12. A.

     rainfall duration

    B.

     rainfall excess

    C.

     time base of direct runoff

    D.

     discharge


  13. The top of the capillary zone

  14. A.

     Lies below the water table at every point

    B.

     Lies above the water table at every point

    C.

     Coincides the water table at every point

    D.

     None of these


  15. For a standing crop, the consumptive use of water is equal to the depth of water

  16. A.

     Transpired by the crop

    B.

     Evaporated by the crop

    C.

     Transpired and evaporated by the crop

    D.

     Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil


  17. For a proportional outlet, the flexibility is

  18. A.

     zero

    B.

     between zero and 1

    C.

     1

    D.

     greater than 1


  19. As per Lacey’s theory, the silt factor is

  20. A.

     directly proportional to average par¬ticle size

    B.

     inversely proportional to average par¬ticle size

    C.

     directly proportional to square root of average particle size

    D.

     not related to average particle size