Civil Engineering - Irrigation

Exercise :: Irrigation - Section 2

1. 

A deficit of sediments in flowing water may cause a river

A. meandering type
B. aggrading type
C. degrading type
D. sub-critical type.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

2. 

Pick up the correct statement from the following:

A. The full supply level of a canal should be above ground level
B. According to Lacey, regime conditions require a particular slope for a given discharge and silt factor
C. In case the ground slope is less than the required bed slope, the silt factor must be reduced by permitting the entry of coarse silt
D. All the above.

Answer: Option D

Explanation:

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3. 

If Δ is the depth of water in metres, B is the number of days of base period and D is the duty in hactare/cumec, the relationship which holds good, is

A.
B.
C.
D.
E. none of these.

Answer: Option D

Explanation:

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4. 

Meandering of a river generally occurs, in

A. rocky stage
B. delta stage
C. boulder stage
D. trough stage.

Answer: Option D

Explanation:

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5. 

The consumptive use of water for a crop

A. is measured as the volume of water per unit area
B. is measured as depth of water on irrigated area
C. may be supplied partly by precipitation and partly by irrigation
D. all the above.

Answer: Option D

Explanation:

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