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Irrigation Engineering

Irrigation Engineering
The relation between probability (P) and recurrence interval (T) is given by

P/T = 1
PT = 1
P/T2 = 1
PT2 = 1

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Irrigation Engineering
Retrogression of the bed level of a river downstream a weir, occurs due to

Soft soil strata
Less percentage of silt
Increase of the bed level
Heavy impact of water

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Irrigation Engineering
The depth of rice root zone, is

50 cm
60 cm
80 cm
90 cm

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Irrigation Engineering
The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be

637 hectares/m3/sec
837 hectares/m3/sec
1172 hectares/m3/sec
972 hectares/m3/sec

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Irrigation Engineering
An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as

Non-modular outlet
Semi-modular outlet
Right modular outlet
Flexible modular outlet

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Irrigation Engineering
A fall in a canal bed is generally provided, if

None of these
Ground slope is practically the same as the designed bed slope
Ground slope exceeds the designed bed slope
Designed bed slope exceeds the ground slope

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