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Irrigation Engineering

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

rigid module
flexible outlet
non-modular outlet
None of these

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Irrigation Engineering
The duty is largest

at the head of a main canal
on the field
at the head of water course
same at all places

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Irrigation Engineering
The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

25 m3/sec
30 m3/sec
20 m3/sec
35 m3/sec

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Irrigation Engineering
A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If<="" div="">

4.5 cm
9.0 cm
6.0 cm
7.5 cm

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Irrigation Engineering
Silt excluders are constructed on the

river bed upstream of head regulator
canal bed downstream of head regulator
canal bed upstream of head regulator
river bed downstream of head regulator

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Irrigation Engineering
A 70% index of wetness means

rain deficiency of 70%
rain excess of 30%
None of these
rain deficiency of 30%

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