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Civil Engineering - Irrigation

Exercise : Irrigation - Section 2
46.
If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is
Q = 1.71 BD1/2
Q = 1.71 BD
Q = 1.71 BD3/2
Q = 1/71 BD2/3
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is
R(θ + tan θ)
R(θ + cot θ)
R2(θ + tan θ)
R2(θ + cot θ)
R(θ + tan θ)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Lacy's regime condition is obtained if
silt grade in the channel is variable
discharge in the channel is variable
silt charge in the channel is variable
channel flows in unlimited, incoherent alluvium of the same character as that transported material.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
In Montague type fall
a straight glacis is provided
a circular glacis is provided
a parabolic glacis is provided
no glacis is provided.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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