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Civil Engineering :: Irrigation Engineering

  1. A 70% index of wetness means

  2. A.

     rain excess of 30%

    B.

     rain deficiency of 30%

    C.

     rain deficiency of 70%

    D.

     none of the above


  3. Useful soil moisture for plant growth, is

  4. A.

     Capillary water

    B.

     Gravity water

    C.

     Hygroscopic water

    D.

     Chemical water


  5. The state of the soil when plants fail to extract sufficient water for their requirements, is

  6. A.

     Maximum saturated point

    B.

     Permanent wilting point

    C.

     Ultimate utilization point

    D.

     None of these


  7. The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are

  8. A.

     At right angle and parallel to weir crest

    B.

     Parallel and at right angle to weir crest

    C.

     Parallel to weir crest in both

    D.

     At right angle to weir crest in both


  9. V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is

  10. A.

     2V²/√3 R

    B.

     3V²/4R

    C.

     5V²/2R

    D.

     2V²/5R


  11. The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of

  12. A.

     Reverse curve

    B.

     Next curve of the same order

    C.

     Reverse curve plus the width of the river

    D.

     None of these


  13. A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If<="" div="">

  14. A.

     4.5 cm

    B.

     6.0 cm

    C.

     7.5 cm

    D.

     9.0 cm


  15. A multipurpose reservoir is the one which is

  16. A.

     designed for one purpose but serves more than one purpose

    B.

     planned and constructed to serve various purposes

    C.

     both (A) and (B)

    D.

     none of the above


  17. A divide wall is provided

  18. A.

     At right angle to the axis of weir

    B.

     Parallel to the axis of weir and upstream of it

    C.

     Parallel to the axis of weir and downstream of it

    D.

     At an inclination to the axis of weir


  19. The consumptive use of water for a crop

  20. A.

     Is measured as the volume of water per unit area

    B.

     Is measured as depth of water on irrigated area

    C.

     May be supplied partly by precipitation and partly by irrigation

    D.

     All the above