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Civil Engineering :: Irrigation Engineering

  1. If there are two canals taking off from each flank of a river, then there will be

  2. A.

     one divide wall and one undersluice

    B.

     one divide wall and two undersluices

    C.

     two divide walls and one undersluice

    D.

     two divide walls and two undersluices

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  3. Horizontal acceleration due to earthquake results in

  4. A.

     hydrodynamic pressure

    B.

     inertia force into the body of the dam

    C.

     both (A) and (B)

    D.

     none of the above

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  5. The stream which does not have any base flow contribution is called

  6. A.

     perennial stream

    B.

     intermittent stream

    C.

     ephemeral stream

    D.

     none of the above

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  7. The depth of rice root zone, is

  8. A.

     50 cm

    B.

     60 cm

    C.

     80 cm

    D.

     90 cm

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  9. To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls

  10. A.

     Of R.C.C. or steel plate 8 cm thick

    B.

     Of height ⅓rd to ¼th the depth of water in the main canal

    C.

     Spaced at interval of 1½ times their heights

    D.

     All the above

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  11. The net speed under which the turbine reaches its peak efficiency is called

  12. A.

     design speed

    B.

     rated speed

    C.

     gross speed

    D.

     operating speed

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  13. When a canal is carried over a natural drainage, the structure provided, is known as

  14. A.

     Syphon

    B.

     Aqueduct

    C.

     Super passage

    D.

     Syphon-aqueduct

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  15. For the upstream face of an earthen dam, the most adverse condition for stability of slope is

  16. A.

     sudden drawdown

    B.

     steady seepage

    C.

     during construction

    D.

     sloughing of slope

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  17. If the critical shear stress of a channel is XC, then the average value of shear stress required to move the grain on the bank is

  18. A.

     0.5 XC

    B.

     0.75 TC

    C.

     XC

    D.

     1.33 TC

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  19. Main purpose of mean water training for rivers is

  20. A.

     Flood control

    B.

     To provide sufficient depth of water in navigable channels, during low water periods

    C.

     To preserve the channel in good shape by efficient disposal of suspended and bed load

    D.

     All of the above

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