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Irrigation Engineering

Irrigation Engineering
For a proportional outlet, the flexibility is

between zero and 1
zero
1
greater than 1

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Irrigation Engineering
A land is said to be water-logged if its soil pores within

A depth of 40 cm are saturated
Root zone of the crops are saturated
A depth of 50 cm are saturated
All listed here

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Irrigation Engineering
If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be

1/(1-0.9°10)
1/(1+ 0.9010)
1 – (0.9)°l0
1 + (0.9)010

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Irrigation Engineering
For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is

0.25
0.5
Zero
1

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Irrigation Engineering
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are

At right angle to weir crest in both
At right angle and parallel to weir crest
Parallel and at right angle to weir crest
Parallel to weir crest in both

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Irrigation Engineering
For a unique design of a channel by Kennedy's theory

Its breadth and depth ratio must only be known
Its breadth must only be known
All of these
Its depth must only be known

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