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Civil Engineering :: Irrigation Engineering

  1. In a chute spillway, the flow is usually

  2. A.

     uniform

    B.

     subcritical

    C.

     critical

    D.

     super critical


  3. Groynes are generally built

  4. A.

     Perpendicular to the bank

    B.

     Inclined up stream up to 30°

    C.

     Inclined downstream up to 30°

    D.

     All the above


  5. The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be

  6. A.

     50 mm

    B.

     60 mm

    C.

     90 mm

    D.

     140 mm


  7. When a canal and a drainage approach each other at the same level, the structure so provided, is

  8. A.

     An aqueduct

    B.

     A syphon

    C.

     A level crossing

    D.

     Inlet and outlet


  9. According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase

  10. A.

     Rate of flood wave

    B.

     Water surface elevation during floods

    C.

     Maximum discharge

    D.

     Surface slope of streams above the levied portion


  11. Study the following statements.
    i) Levees are constructed parallel to river flow,
    ii) Spurs are constructed parallel to river flow,
    iii) Levees are constructed transverse to river flow,
    iv) Spurs are constructed transverse to river flow.
    The correct answer is

  12. A.

     (i) and (ii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (iii) and (iv)


  13. Instantaneous unit hydrograph is a hydrograph of
    i) unit duration
    ii) unit rainfall excess
    iii) infinitely small duration
    iv) infinitely small rainfall excess
    The correct answer is

  14. A.

     (i) and (ii)

    B.

     (i)and(iv)

    C.

     (ii) and (iii)

    D.

     (iii) and (iv)


  15. To estimate the magnitude of a flood with a return period of T years, Gumbel’s distribution method requires the following data pertaining to annual flood series
    i) mean value
    ii) standard deviation
    iii) length of record
    iv) coefficient of skew
    The correct answer is

  16. A.

     (i) and (ii)

    B.

     (i),(ii) and (iii)

    C.

     (i), (ii) and (iv)

    D.

     (i), (ii), (iii) and (iv)


  17. Presence of tail water in a gravity dam
    i) increases the principal stress
    ii) decreases the principal stress
    iii) increases the shear stress
    iv) decreases the shear stress
    The correct answer is

  18. A.

     (i) and (iii)

    B.

     (i)and(iv)

    C.

     (ii) and (iii)

    D.

     (ii) and (iv)


  19. A current meter is used to measure the

  20. A.

     velocity of flow of water

    B.

     depth of flow of water

    C.

     discharge

    D.

     none of the above