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Irrigation Engineering

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

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

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Irrigation Engineering
Variability of rainfall is
i) largest in regions of high rainfall
ii) largest in coastal areas
iii) largest in regions of scanty rainfall
The correct answer is

(i) and (ii)
(ii) and (iii)
only (i)
only (iii)

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Irrigation Engineering
According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is

2.00 D
1.25 D
1.75 D
1.50 D

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Irrigation Engineering
The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are
i) Water pressure
ii) Self weight
iii) Uplift
iv) Pressure due to earthquake
The correct answer is

(i), (ii) and (iv)
(i), (ii) and (iii)
Only (ii)
(i), (ii), (iii) and (iv)

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Irrigation Engineering
If the R.L’s of canal bed level and high flood level of drainage are 212.0 m and 210.0 m respectively, then cross drainage work will be

superpassage
aqueduct
syphon aqueduct
syphon

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Irrigation Engineering
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is

1.054
1.064
1.084
1.074

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