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Irrigation Engineering

Irrigation Engineering
If V₀ is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to

V₀3/2
V₀1/2
V₀5/2
V₀7/2

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Irrigation Engineering
Which of the following spillways is least suitable for an earthen dam ?

chute spillway
ogee spillway
shaft spillway
side channel spillway

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Irrigation Engineering
If D₁ and D₂ are depths of water upstream and downstream of a hydraulic jump, the loss of head at the jump, is

(D₂ - D₁)3/2D₁D₂
(D₂ - D₁)3/4D₁D₂
(D₂ - D₁)3/3D₁D₂
(D₂ - D₁)3/D₁D₂

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Irrigation Engineering
The net head under which the turbine reaches its peak efficiency at synchronous speed is called

operating head
design head
rated head
gross head

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Irrigation Engineering
A hydraulic structure is designed to withstand

Seepage forces
Hydraulic pressure
Hydraulic jump
All of these

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Irrigation Engineering
Variability of rainfall is
i) largest in regions of high rainfall
ii) largest in coastal areas
iii) largest in regions of scanty rainfall
The correct answer is

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

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