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Irrigation Engineering

Irrigation Engineering
Irrigation canals are generally aligned along

Contour line
Ridge line
Valley line
Straight line

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Irrigation Engineering
Fundamental momentum equation for a hydraulic jump, is

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

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Irrigation Engineering
A straight glacis type fall with a baffle platform and a baffle wall is called

Glacis fall
Montague type fall
Inglis fall
Vertical drop-fall

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Irrigation Engineering
While deciding the alignment of a proposed canal taking off from a river at B, three alignments of approximately equal lengths are available. These cross a drainages at C1, C2 and C3 where drainage bed levels C1 > C2 > C3, you will provide at site C3

A syphon aqueduct
A syphon
A super passage
An aqueduct

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Irrigation Engineering
A minimum of 90 cm free board is provided if the discharge in the canal is between

Over 100 cumecs
30 to 60 cumecs
Over 60 cumecs
30 to 33 cumecs

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Irrigation Engineering
A unit hydro graph has one unit of

rainfall excess
time base of direct runoff
discharge
rainfall duration

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