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Irrigation Engineering - section-1
  1. Silt excluders are constructed on the

    2. A.

     river bed upstream of head regulator
    B.

     river bed downstream of head regulator
    C.

     canal bed upstream of head regulator
    D.

     canal bed downstream of head regulator

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  2. In Montague type fall

    3. A.

     A straight glacis is provided
    B.

     A circular glacis is provided
    C.

     A parabolic glacis is provided
    D.

     No glacis is provided

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  3. For a flood control reservoir, the effective storage is equal to

    4. A.

     useful storage – valley storage
    B.

     useful storage + surcharge storage
    C.

     useful storage + surcharge storage + valley storage
    D.

     useful storage + surcharge storage -valley storage

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  4. The crest level of a canal diversion head work, depends upon

    5. A.

     F.S.L. of the canal
    B.

     Discharge perimeters
    C.

     Pond level
    D.

     All the above

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  5. Select the correct statement.

    6. A.

     A meander increases the river length but a cut off reduces the river length
    B.

     A cut-off increases the river length but a meander reduces the river length
    C.

     Both meander and cut-off increase the river length
    D.

     Both meander and cut-off decrease the river length

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  6. Select the incorrect statement.

    7. A.

     Intensive irrigation should be avoided in areas susceptible to water logging
    B.

     Extensive irrigation should be adopted in areas susceptible to water logging
    C.

     Lift irrigation increases water logging
    D.

     All of the above

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  7. When surface of transpiration is submerged under water, then potential evapotranspiration is

    8. A.

     much more than evapotranspiration
    B.

     much less than evapotranspiration
    C.

     equal to evapotranspiration
    D.

     equal to or less than evapotranspi-ration

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  8. The maximum average depth due to one day storm over an area of 100 km2 is 100 mm. Depth-Area-Duration (DAD) curves indicate that for the same area of 100 km2 the maximum average depth for a 3 hour storm will be

    9. A.

     100 mm
    B.

     more than 100 mm
    C.

     less than 100 mm
    D.

     none of the above

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  9. When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called

    10. A.

     Syphon
    B.

     Aqueduct
    C.

     Super passage
    D.

     Syphon-aqueduct

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  10. In a canal syphon, the flow is

    11. A.

     Under atmospheric pressure
    B.

     Pipe flow
    C.

     With critical velocity
    D.

     Under negative pressure

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