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Civil Engineering :: Irrigation Engineering

  1. In North Indian Plains, optimum depth of kor watering for wheat, is

  2. A.

     23.0 cm

    B.

     19.0 cm

    C.

     17.5 cm

    D.

     13.5 cm


  3. The main cause of silting up a channel,

  4. A.

     Non-regime section

    B.

     Inadequate slope

    C.

     Defective head regulator

    D.

     All the above


  5. A fall which maintains its depth, is

  6. A.

     A trapezoidal notch fall

    B.

     A low weir fall

    C.

     A rectangular notch fall

    D.

     All the above


  7. Retrogression of the bed level of a river downstream a weir, occurs due to

  8. A.

     Heavy impact of water

    B.

     Increase of the bed level

    C.

     Less percentage of silt

    D.

     Soft soil strata


  9. The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept

  10. A.

     0.20 m

    B.

     1.20 m

    C.

     2.20 m

    D.

     3.20 m


  11. For smooth entry of water in a canal, the angle between head regulator and water is generally kept

  12. A.

     80°

    B.

     90°

    C.

     110°

    D.

     120°


  13. For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is

  14. A.

     0.2 x 106

    B.

     0.6 x 106

    C.

     2.4 xlO6

    D.

     7.2 xlO6


  15. If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that

  16. A.

     demand cannot be met by inflow

    B.

     reservoir was not full at the beginning

    C.

     both (A) and (B)

    D.

     none of the above


  17. The most suitable material for the central impervious core of a zoned embankment type dam is

  18. A.

     clay

    B.

     coarse sand

    C.

     silty clay

    D.

     clay mixed with fine sand


  19. The relation between probability (P) and recurrence interval (T) is given by

  20. A.

     PT = 1

    B.

     PT2 = 1

    C.

     P/T = 1

    D.

     P/T2 = 1