if the depth of water in an open channel is greater than the critical depth, the flow is called________________?
Correct answer: B. Sub-critical flow
- A. Critical depth
- B. Sub-critical flow
- C. Non-critical flow
- D. Shooting flow
Explanation
When flow depth exceeds critical depth, the Froude number is below one and the flow is sub-critical, meaning disturbances can travel upstream. Shooting flow is the super-critical condition, in which depth is less than critical depth.
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