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Irrigation Engineering

Irrigation Engineering
In a barrage, the crest level is kept

Low with large gates
High with large gates
High with no gates
Low with no gates

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Irrigation Engineering
Disposal of extra excavated earth of canals, is utilized to provide a spoil bank on

Both sides
All listed here
Left side
Right side

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Irrigation Engineering
Lacey's equation for calculating flood discharge in rivers, is

V = 10.8 R1/2 S1/2
V = 10.8 R2/3 S1/3
V = 10.8 R1/3 S2/3
V = 10.8 R2/3 S1/2

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Irrigation Engineering
The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by

l-(0.9)100
1 – (0.99)10
(0.99)10
(0.9)00

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Irrigation Engineering
The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called

soil moisture deficiency
pellicular water
hygroscopic water
equivalent moisture

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Irrigation Engineering
The value of Sodium Absorption Ratio for high sodium water lies between

0 to 10
26 to 34
18 to 26
10 to 18

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