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There is a free overfall at the end of a long open channel. For a given flow rate, the critical depth is less than the normal depth. What gradually varied flow profile will occur in the channel for this flow rate?
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- M1
- M2
- M3
- S1
Correct Option: B
yn > yc
∴ Mild slope For free flow at end of long channel on mild slope, there is draw down and depth decreases from yn to yc and not below yc.
∴ yn > y > yc.
