Civil Engineering - Irrigation

Exercise :: Irrigation - Section 1

6. 

The difference in level between the top of a bank and supply level in a canal, is called

A. berm
B. free board
C. height of bank
D. none of these.

Answer: Option B

Explanation:

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7. 

F.S.L. of a canal at its head with respect to parent channel is kept

A. at the same level
B. 15 cm lower
C. 15 cm higher
D. none of these.

Answer: Option B

Explanation:

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8. 

The measure to remove water logging of land, is

A. to reduce percolation from canals and water courses
B. to increase outflow from the ground water reservoir
C. both (a) and (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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9. 

Attracting groynes are built

A. perpendicular to the bank
B. inclined down stream
C. inclined up stream
D. none of these.

Answer: Option B

Explanation:

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10. 

Retrogression of the bed level of a river downstream a weir, occurs due to

A. heavy impact of water
B. increase of the bed level
C. less percentage of silt
D. soft soil strata.

Answer: Option C

Explanation:

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