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Irrigation Engineering

Irrigation Engineering
For a proportional outlet, the flexibility is

1
greater than 1
zero
between zero and 1

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Irrigation Engineering
If D is the depth of scour below original bed, then the width of launching apron is generally taken as

1.2 D
2.5 D
1.5 D
2.0 D

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Irrigation Engineering
The sinuosity of a meander is the ratio of

None of these
Meander length and half width of the river
Meander length and the width of meander
Curved length and the straight distance

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Irrigation Engineering
Finally formed berms in canals are provided for

Strengthening of banks
All of these
Protection of banks erosion by the waves
Control of seepage losses

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Irrigation Engineering
The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be

70mm
90 mm
80mm
105 mm

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Irrigation Engineering
The best unit duration of storm for a unit hydrograph is

equal to basin lag
1 hour
one-half of basin lag
one-fourth of basin lag

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