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Irrigation Engineering

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

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

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Irrigation Engineering
According to Kennedy, the critical velocity (V₀) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).

V₀ = 0.84 mD0.64
V₀ = 0.55 mD0.64
V₀ = 0.55 mD0.54
V₀ = 0.84 mD0.54

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Irrigation Engineering
Garnett's diagrams are used for graphical solution of design equations of a canal by

Lindlay theory
Lacey's theory
Kennedy's theory
Gibb's theory

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Irrigation Engineering
The water face of the guide banks, is protected by

One men stone pitching
Four man stone pitching
Two man stone pitching
Three man stone pitching

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Irrigation Engineering
Canals taken off from ice-fed perennial rivers, are known

Inundation canals
Perennial canals
Ridge canals
Permanent canals

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Irrigation Engineering
When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called

Syphon-aqueduct
Syphon
Aqueduct
Super passage

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