IRRIGATION ENGINEERING QUIZ

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

Syphon

Super passage

Aqueduct

Syphon-aqueduct

TRUE ANSWER : ?
YOUR ANSWER : ?

Useful soil moisture for plant growth, is

Chemical water

Gravity water

Capillary water

Hygroscopic water

TRUE ANSWER : ?
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Irrigation canals are generally aligned along

Contour line

Valley line

Ridge line

Straight line

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

Heavy impact of water

Increase of the bed level

Less percentage of silt

Soft soil strata

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The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called

hygroscopic water

equivalent moisture

pellicular water

soil moisture deficiency

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Pick up the correct statement from the following answer

If the flexibility is more than one, the outlet is hyper-proportional

If the flexibility is zero, it is a rigid module

All of these

If the setting of an outlet is higher than that required for proportionality, the outlet is hyperproportional

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Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be

38m

91m

19m

15m

TRUE ANSWER : ?
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The shape of recession limb of a hydrograph depends upon

Both (A) and (B)

Basin characteristics only

Storm characteristics only

None of these

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If average particle size of the silt in millimeters is m, the Lacey's silt factor f is proportional to

m3

m1/2

m2/3

m1/3

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A fall which maintains its depth, is

All listed here

A low weir fall

A rectangular notch fall

A trapezoidal notch fall

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