Exercise: Irrigation

Questions for: Irrigation

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: C
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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: D
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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
Answer: D
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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: D
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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: A
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