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Irrigation Engineering

Irrigation Engineering
Disposal of extra excavated earth of canals, is utilized to provide a spoil bank on

Right side
Both sides
All listed here
Left side

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Irrigation Engineering
For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is

m/N
(N+l)/m
N/(m+l)
m/(N+l)

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Irrigation Engineering
The useful storage is the volume of water stored in the reservoir between

minimum pool level and maximum pool level
normal pool level and maximum pool level
river bed and minimum pool level
minimum pool level and normal pool level

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Irrigation Engineering
Fundamental momentum equation for a hydraulic jump, is

D₁² - D₂² = (2q/g) × (V₁ - V₂)
D₂² - D₁² = (2q/g) × (V - V₂)
D₁² + D₂² = (2q/g) × (V₂ - V₁)
D₁² - D₂² = (2q/g) × (V₂ - V₁)

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Irrigation Engineering
If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is

Q = 1.71 BD3/2
Q = 1.71 BD1/2
Q = 1.71 BD
Q = 1/71 BD2/3

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Irrigation Engineering
If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is

2R (θ + tan θ)
R (θ + tan θ)
R (θ + cos θ)
2R (θ + cos θ)

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