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Irrigation Engineering

Irrigation Engineering
F.S.L. of a canal at its head with respect to parent channel is kept

15 cm higher
15 cm lower
None of these
At the same level

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Irrigation Engineering
The field capacity of a soil depends upon

Both (a) and (b)
Capillary tension in soil
Porosity of soil
Neither (a) nor (b)

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Irrigation Engineering
Instantaneous unit hydrograph is a hydrograph of
i) unit duration
ii) unit rainfall excess
iii) infinitely small duration
iv) infinitely small rainfall excess
The correct answer is

(ii) and (iii)
(i)and(iv)
(i) and (ii)
(iii) and (iv)

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Irrigation Engineering
Fundamental momentum equation for a hydraulic jump, is

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

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Irrigation Engineering
For wave action in dams, the maximum height of freeboard is generally taken to be equal to (where hw is height of wave.)

1.50 hw
0.75 hw
0.5 hw
1.25 hw

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

Inglis fall
Montague type fall
Glacis fall
Vertical drop-fall

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