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Irrigation Engineering

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

operating head
gross head
rated head
design head

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Irrigation Engineering
Study the following statements.
i) Levees are constructed parallel to river flow,
ii) Spurs are constructed parallel to river flow,
iii) Levees are constructed transverse to river flow,
iv) Spurs are constructed transverse to river flow.
The correct answer is

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

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Irrigation Engineering
Hydrograph is the graphical representation of

surface runoff and time
runoff and time
ground waterflow and time
rainfall 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

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

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Irrigation Engineering
A hydraulic structure is designed to withstand

All of these
Hydraulic pressure
Seepage forces
Hydraulic jump

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Irrigation Engineering
The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by

total rainfall
period of storm
direct runoff volume
None of these

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