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Civil Engineering - Irrigation

Exercise : Irrigation - Section 3
1.
If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle θ with horizontal, the hydraulic mean depth is
D
D/2
D/3
D/4
D/5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
If water table is comparatively high, the irrigation canal becomes useless, due to
large amount of seepage
water logging of the cultivated areas
uncertain water demand
spread of malaria
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
A river is said to be of
aggrading type if it builds up its bed to a certain slope
degrading type if it cuts its bed to a certain slope
meandering type if it flows in sinuous curve
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
A land is said to be water-logged if its soil pores within
a depth of 40 cm are saturated
a depth of 50 cm are saturated
root zone of the crops are saturated
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
In case of a trapezoidal notch fall
top width of the notch is kept between 3/4 th of full water depth above the sill of the notch
top length of the piers should not be less than their thickness
splay up stream from the notch section is 45°
splay down stream from the notch section is
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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