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Irrigation Engineering

Irrigation Engineering
Which of the following methods of applying water may be used on rolling land ?

boarder flooding
furrow flooding
check flooding
free flooding

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Irrigation Engineering
A hyetograph is a graphical representation of

discharge and time
cumulative rainfall and time
rainfall intensity and time
rainfall depth and time

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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 bet-ween the dam and its foundation iii) by pressure grouting in foundation The corret answer is

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

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Irrigation Engineering
A unit hydro graph has one unit of

rainfall excess
rainfall duration
discharge
time base of direct runoff

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

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

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Irrigation Engineering
If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is

Q = 1.71 BD
Q = 1.71 BD1/2
Q = 1/71 BD2/3
Q = 1.71 BD3/2

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