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Irrigation Engineering

Irrigation Engineering
The net speed under which the turbine reaches its peak efficiency is called

rated speed
design speed
operating speed
gross speed

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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

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

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Irrigation Engineering
If water table is comparatively high, the irrigation canal becomes useless, due to

All of these
Large amount of seepage
Uncertain water demand
Water logging of the cultivated areas

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Irrigation Engineering
If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

x = d1 / r1
x = r1 d1
x = d2 / r2
x = r2 d2

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Irrigation Engineering
Useful soil moisture for plant growth, is

Chemical water
Gravity water
Capillary water
Hygroscopic water

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Irrigation Engineering
Instantaneous unit hydrograph is a hydrograph of
i) unit duration
ii) unit rainfall excess
iii) infinitely small duration
iv) infinitely small rainfall excess
The correct answer is

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

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