A rectangular channel of 2.5 m width is carrying a discharge of 4 m /s. Considering that acceleration due to gravity as 9.81 m/s , the velocity of flow (in m/s) corresponding to the critical depth (at which the specific energy is minimum) is ________.

A rectangular channel of 2.5 m width is carrying a discharge of 4 m /s

1.	A rectangular channel of 2.5 m width is carrying a discharge of 4 m /s. Considering that acceleration due to gravity as 9.81 m/s , the velocity of flow (in m/s) corresponding to the critical depth (at which the specific energy is minimum) is ________.
A.	1.5 m/s
B.	2 m/s
C.	2.5 m/s
D.	3 m/s
Answer» D. 3 m/s

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A rectangular channel of 2.5 m width is carrying a discharge of 4 m /s. Considering that acceleration due to gravity as 9.81 m/s , the velocity of flow (in m/s) corresponding to the critical depth (at which the specific energy is minimum) is ________.

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