Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 25 (Q.No. 9)
9.
A rectangular channel carries a discharge of 5 m3/s. The channel is 2 m wide. What is the critical depth of the flow ?
1.25 m
1.07 m
0.565 m
0.86 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Tanpreet said:   7 years ago
Yc= (q^2/g)^1 ÷ 3.

Answer is 0.86m.

Arsh said:   9 years ago
For rectangular channels, the critical depth, dc ft (m), is given by dc =[Q2/b2g]1/3.

Where,
dc =critical depth, ft (m).

Q= quantity of flow or discharge, ft3/s (m3/s).

B= width of channel, ft (m).

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