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Irrigation Engineering

Irrigation Engineering
The depth of rice root zone, is

80 cm
90 cm
60 cm
50 cm

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Irrigation Engineering
If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that

None of these
reservoir was not full at the beginning
both (A) and (B)
demand cannot be met by inflow

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Irrigation Engineering
Presence of tail water in a gravity dam
i) increases the principal stress
ii) decreases the principal stress
iii) increases the shear stress
iv) decreases the shear stress
The correct answer is

(ii) and (iv)
(i)and(iv)
(i) and (iii)
(ii) and (iii)

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Irrigation Engineering
Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be

19m
91m
15m
38m

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Irrigation Engineering
The measure to remove water logging of land, is

To reduce percolation from canals and water courses
To increase outflow from the ground water reservoir
Both (a) and (b)
Neither (a) nor (b)

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Irrigation Engineering
The uplift pressure on a dam can be controlled by
i) constructing cutoff under upstream face
ii) constructing drainage channels between the dam and its foundation
iii) by pressure grouting in foundation
The corret answer is

only (i)
both (i) and (iii)
both (i) and (ii)
(i), (ii) and (iii)

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