Exercise: Irrigation

Questions for: Irrigation

The sinuosity of a meander is the ratio of
A:
meander length and the width of meander
B:
meander length and half width of the river
C:
curved length and the straight distance
D:
none of these.
Answer: C
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For designing the venturi head,
A:
width of the throat should not be less than one-third of the bed width of main canal
B:
width of the throat should not be less than the width obtained from the formula B = Q / 1.2d3/2, where d is the difference in levels of F.S.L. and sill
C:
minimum throat width should not be less than 60 cm
D:
length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
Answer: E
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For the design of major hydraulic structures on the canals, the method generally preferred to, is based on
A:
Bligh's theory
B:
Electrical analogy method
C:
The relaxation method
D:
Khosla's method of independent variables.
Answer: D
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Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less
A:
populated area
B:
alkaline area
C:
forest area
D:
fallow land.
Answer: D
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The top of the capillary zone
A:
lies below the water table at every point
B:
lies above the water table at every point
C:
coincides the water table at every point
D:
none of these.
Answer: B
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