Civil Engineering - Irrigation

Exercise :: Irrigation - Section 3

26. 

The field capacity of a soil depends upon

A. capillary tension in soil
B. porosity of soil
C. both (a) and (b)
D. neither (a) nor (b).

Answer: Option C

Explanation:

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27. 

Finally formed berms in canals are provided for

A. protection of banks erosion by the waves
B. control of seepage losses
C. strengthening of banks
D. all the above.

Answer: Option D

Explanation:

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28. 

An outlet is said to be proportional if its flexibility, is

A. zero
B. less than one
C. more than one
D. one

Answer: Option D

Explanation:

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29. 

The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is

A. 1.084
B. 1.074
C. 1.064
D. 1.054
E. 2.053

Answer: Option A

Explanation:

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30. 

For standing crops in undulating sandy fields, the best method of irrigation, is

A. sprinkler irrigation
B. free flooding
C. check method
D. furrow method
E. none of these.

Answer: Option A

Explanation:

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