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Irrigation Engineering

Irrigation Engineering
The water utilizable by plants is available in soils mainly in the form of

chemical water
hydroscopic water
capillary water
gravity water

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Irrigation Engineering
The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are
i) Water pressure
ii) Self weight
iii) Uplift
iv) Pressure due to earthquake
The correct answer is

(i), (ii) and (iv)
Only (ii)
(i), (ii) and (iii)
(i), (ii), (iii) and (iv)

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Irrigation Engineering
For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is

N/(m+l)
m/N
m/(N+l)
(N+l)/m

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Irrigation Engineering
For a unique design of a channel by Kennedy's theory

Its breadth and depth ratio must only be known
Its depth must only be known
Its breadth must only be known
All of these

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Irrigation Engineering
The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to

3 to 4 m per second
2 to 3 m per second
1 to 2 m per second
4 to 5 m per second

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Irrigation Engineering
The optimum depth of kor watering for a rice crop, is

17.5 cm
23.0 cm
19.0 cm
13.5 cm

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