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Irrigation Engineering

Irrigation Engineering
Which of the following canal outlets maintains a constant discharge ?

flexible outlet
None of these
rigid module
non-modular outlet

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Irrigation Engineering
The most suitable section of a lined canal, is

Trapezoidal section with rounded corners for large canals
Both (a) and (b)
None of these
Triangular section with circular bottom for small canals

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Irrigation Engineering
The top of the capillary zone

Lies above the water table at every point
Lies below the water table at every point
Coincides the water table at every point
None of these

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Irrigation Engineering
For a flood control reservoir, the effective storage is equal to

useful storage + surcharge storage
useful storage + surcharge storage + valley storage
useful storage + surcharge storage -valley storage
useful storage – valley storage

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Irrigation Engineering
V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is

2V²/5R
5V²/2R
3V²/4R
2V²/√3 R

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Irrigation Engineering
Study the following statements.
i) Levees are constructed parallel to river flow,
ii) Spurs are constructed parallel to river flow,
iii) Levees are constructed transverse to river flow,
iv) Spurs are constructed transverse to river flow.
The correct answer is

(i) and (iv)
(iii) and (iv)
(i) and (ii)
(ii) and (iii)

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