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Irrigation Engineering

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

15m
19m
91m
38m

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Irrigation Engineering
The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by

11RS
15 RS
7RS
4RS

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

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

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Irrigation Engineering
The major resisting force in a gravity dam is

wave pressure
uplift pressure
water pressure
self-weight of dam

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Irrigation Engineering
F.S.L. of a canal at its head with respect to parent channel is kept

15 cm lower
At the same level
15 cm higher
None of these

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Irrigation Engineering
If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by

k= VTd
T = k/d
T= Vkd
T = kd

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