Civil Engineering - Irrigation

Exercise :: Irrigation - Section 1

36. 

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

A. F.S.L. of the canal
B. discharge perimeters
C. pond level
D. all the above
E. none these.

Answer: Option D

Explanation:

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37. 

The depth of rice root zone, is

A. 50 cm
B. 60 cm
C. 70 cm
D. 80 cm
E. 90 cm

Answer: Option E

Explanation:

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38. 

The intensity of irrigation means

A. percentage of culturable commanded area to be irrigated annually
B. percentage of gross commanded area to be irrigated annually
C. percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually
D. total depth of water supplied by the number of waterings.

Answer: Option A

Explanation:

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39. 

The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally

A. 2 : 1
B. 3 : 1
C. 4 : 1
D. 5 : 1
E. 6 : 1

Answer: Option C

Explanation:

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40. 

The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept

A. 0.20 m
B. 1.20 m
C. 2.20 m
D. 3.20 m
E. 4.90 m

Answer: Option B

Explanation:

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