Civil Engineering - Irrigation

Exercise :: Irrigation - Section 2

36. 

The length and width of a meander and also the width of the river, vary roughly as

A. square root of the discharge
B. discharge
C. square of the discharge
D. cube of the discharge.

Answer: Option A

Explanation:

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37. 

Regime conditions in a channel may occur if

A. discharge is constant
B. channel flows uniformly in incoherent alluvium as that transported in suspension
C. silt grade and silt charge are constant
D. all the above.

Answer: Option D

Explanation:

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38. 

If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is

A. 1000
B. 1200
C. 1400
D. 1600
E. 2000

Answer: Option D

Explanation:

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39. 

If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by

A. B = 0.22 H + d
B. B = 0.33 H + d
C. B = 0.44 H + d
D. B = 0.55 H + d

Answer: Option D

Explanation:

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40. 

According to Bligh's creep theory, percolating water flows along

A. straight path under the foundation of the dam
B. circular path under the foundation of the dam
C. the outline of the base of the foundation of the dam
D. none of these.

Answer: Option C

Explanation:

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