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Irrigation Engineering

Irrigation Engineering
For a proportional outlet, the flexibility is

greater than 1
1
between zero and 1
zero

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

V₀3/2
V₀5/2
V₀1/2
V₀7/2

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Irrigation Engineering
Which of the following types of falls use parabolic glacis for energy dissipation ?

Montague type fall
glacis fall
vertical drop fall
inglis fall

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Irrigation Engineering
A minimum of 90 cm free board is provided if the discharge in the canal is between

30 to 60 cumecs
Over 100 cumecs
Over 60 cumecs
30 to 33 cumecs

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Irrigation Engineering
Optimum depth of kor watering for rice is

190 mm
165 mm
135 mm
215 mm

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Irrigation Engineering
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

t = (h - 1)/(G - t)
t = (h + 1)/(G + t)
t = (h + 1)/G
t = (h - 1)/(G + t)

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