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Irrigation Engineering

Irrigation Engineering
Which of the following canal outlets maintains a constant discharge ?

flexible outlet
rigid module
non-modular outlet
None of these

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Irrigation Engineering
The difference in level between the top of a bank and supply level in a canal, is called

Berm
Height of bank
Free board
None of these

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Irrigation Engineering
The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than

40 cm
30 cm
10 cm
20 cm

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

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Irrigation Engineering
Infiltration is the

absorption of water by soil surface
movement of water through the soil
both (A) and (B)
None of these

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Irrigation Engineering
If the critical shear stress of a channel is XC, then the average value of shear stress required to move the grain on the bank is

1.33 TC
0.75 TC
0.5 XC
XC

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