Civil Engineering - Irrigation

Exercise :: Irrigation - Section 2

11. 

The scour depth D of a river during flood, may be calculated from the Lacey's equation

A.
B.
C.
D.

Answer: Option C

Explanation:

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12. 

If V0 is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to

A.
B.
C.
D.
E.

Answer: Option C

Explanation:

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13. 

The useful moisture of soil, is equal to its

A. field capacity
B. saturation capacity
C. moisture content at permanent wilting point
D. difference between filed capacity and permanent wilting point within the root zone of plants.

Answer: Option D

Explanation:

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14. 

Canals taken off from ice-fed perennial rivers, are known

A. permanent canals
B. ridge canals
C. perennial canals
D. inundation canals
E. ice canals.

Answer: Option C

Explanation:

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15. 

The down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

A. 30°
B. 45°
C. 60°
D. 90°

Answer: Option B

Explanation:

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