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Irrigation Engineering

Irrigation Engineering
Interception losses are due to
i) evaporation
ii) transpiration
iii) stream flow
The correct answer is

(i)and(ii)
(ii) and (iii)
only (i)
(i), (ii) and (iii)

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Irrigation Engineering
Solution of Laplacian equation in three dimensions d²φ/dx² + d²φ/dy² + d²φ/dz² = 0 of water in a syphon, is done by

Khosla's method
Analytical method
Unwin's method
Method of relaxation

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Irrigation Engineering
Tortuosity of a meandering river is always

equal to 1
greater than 1
less than or equal to 1
less than 1

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Irrigation Engineering
In a canal syphon, the flow is

Under atmospheric pressure
With critical velocity
Under negative pressure
Pipe flow

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Irrigation Engineering
Fundamental momentum equation for a hydraulic jump, is

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

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Irrigation Engineering
Finally formed berms in canals are provided for

Control of seepage losses
All of these
Protection of banks erosion by the waves
Strengthening of banks

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