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Irrigation Engineering

Irrigation Engineering
Which of the following is a flexible outlet ?

None of these
Gibb’s outlet
Kennedy’s gauge outlet
submerged pipe outlet

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Irrigation Engineering
If B and d are the bed width and depth of a channel in meters, the combined losses due to evaporation and seepage in cumecs per kilometer length of the channel, is

(1/100) × (B + d)2/3
(1/200) × (B + d)2/3
(1/50) × (B + d)2/3
(1/150) × (B + d)2/3

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Irrigation Engineering
A unit hydro graph has one unit of

time base of direct runoff
rainfall excess
discharge
rainfall duration

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Irrigation Engineering
In case of non-availability of space due to topography, the most suitable spillway is

chute spillway
straight drop spillway
ogee spillway
shaft spillway

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

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Irrigation Engineering
Lacey's equation for calculating flood discharge in rivers, is

V = 10.8 R1/2 S1/2
V = 10.8 R2/3 S1/2
V = 10.8 R2/3 S1/3
V = 10.8 R1/3 S2/3

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