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IRRIGATION ENGINEERING

Irrigation Engineering
According to Bligh's creep theory, percolating water flows along

Straight path under the foundation of the dam
The outline of the base of the foundation of the dam
None of these
Circular path under the foundation of the dam

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Irrigation Engineering
A land is known as waterlogged

when the permanent wilting point is reached
None of these
capillary fringe reaches the root zone of plants
when gravity drainage has ceased

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Irrigation Engineering
When the reservoir is full, the maximum compressive force in a gravity dam is produced

at centre of base
within the middle third of base
at the heel
at the toe

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Irrigation Engineering
Fundamental momentum equation for a hydraulic jump, is

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

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Irrigation Engineering
The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

35 m3/sec
30 m3/sec
20 m3/sec
25 m3/sec

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