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Civil Engineering :: Irrigation Engineering

  1. The "outlet discharge factor" is the duty at the head of

  2. A.

     main canal

    B.

     branch canal

    C.

     watercourse

    D.

     distributory

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  3. If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

  4. A.

     Total pressure on the surface is equal to ωx̅

    B.

     Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅

    C.

     Depth of the centre of pressure is 2/3H vertically below the surface

    D.

     All the above

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  5. A water-logged land is found suitable for cultivation due to

  6. A.

     Ease of tillage for preparation of the field for optimum condition of germination

    B.

     Absence of aeration of soil from root zone of the plant

    C.

     Regular supply of water to plants from the water table by capillary action

    D.

     None of these

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  7. An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as

  8. A.

     Non-modular outlet

    B.

     Semi-modular outlet

    C.

     Flexible modular outlet

    D.

     Right modular outlet

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  9. If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is

  10. A.

     100 PLC

    B.

     PLC/1000

    C.

     PL/1000C

    D.

     PC/100L

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  11. Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?

  12. A.

     slope-area method

    B.

     area-velocity method

    C.

     moving boat method

    D.

     ultra-sonic method

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  13. The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in

  14. A.

     aqueduct and syphon aqueduct

    B.

     aqueduct and super passage

    C.

     super passage and canal syphon

    D.

     level crossing

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  15. According to Bligh's creep theory, percolating water flows along

  16. A.

     Straight path under the foundation of the dam

    B.

     Circular path under the foundation of the dam

    C.

     The outline of the base of the foundation of the dam

    D.

     None of these

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  17. A river training work is generally required when the river is

  18. A.

     Meandering

    B.

     Aggrading

    C.

     Degrading

    D.

     All the above

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  19. A river training work is generally required when the river is

  20. A.

     aggrading type

    B.

     degrading type

    C.

     meandering type

    D.

     both (A) and (B)

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