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Irrigation Engineering

Irrigation Engineering
The ratio of the rate of change of discharge of an outlet and parent channel, is known as

Flexibility
Modular limit
Sensitivity
Efficiency

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

operating speed
gross speed
rated speed
design speed

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

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Irrigation Engineering
If D is the depth of scour below original bed, then the width of launching apron is generally taken as

1.5 D
2.0 D
2.5 D
1.2 D

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Irrigation Engineering
A land is said to be water-logged if its soil pores within

All listed here
Root zone of the crops are saturated
A depth of 40 cm are saturated
A depth of 50 cm are saturated

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Irrigation Engineering
The Lacey's regime velocity is proportional to

R1/2 S3/4
R2/3 S1/2
R3/4 S1/3
Q3/4 S1/3

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