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Irrigation Engineering

Irrigation Engineering
A raingauge should preferably be fixed

in a closed space
near the building
under the tree
in an open space

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Irrigation Engineering
If the critical shear stress of a channel is XC, then the average value of shear stress required to move the grain on the bank is

XC
0.5 XC
1.33 TC
0.75 TC

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Irrigation Engineering
If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is

PC/100L
PL/1000C
PLC/1000
100 PLC

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Irrigation Engineering
The main cause of meandering is

the extra turbulence generated by the excess of river sediment during floods
degradation
None of these
presence of an excessive bed slope in the river

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Irrigation Engineering
For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of

rabi or kharif
rabi and kharif or sugarcane
rabi and sugarcane or kharif and sugarcane
rabi or kharif or sugarcane

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Irrigation Engineering
When a canal is carried over a natural drainage, the structure provided, is known as

Syphon-aqueduct
Aqueduct
Syphon
Super passage

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