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Irrigation Engineering

Irrigation Engineering
The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

90°
30°
60°
45°

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Irrigation Engineering
If it rains between 2 P.M. and 3 P.M. and the entire basin area just starts contributing water at 3 P.M. to the outlet, then time of concentration will be

15 minutes
60 minutes
20 minutes
30 minutes

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

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Irrigation Engineering
The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is

equal to zero
equal to 1
greater than 1
less than 1

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Irrigation Engineering
Canals taken off from ice-fed perennial rivers, are known

Perennial canals
Ridge canals
Inundation canals
Permanent canals

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Irrigation Engineering
The crest level of a canal diversion head work, depends upon

All listed here
F.S.L. of the canal
Discharge perimeters
Pond level

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