If the velocity of flow through a wide rectangular channel is 2m⁄s and the rate of change of depth is 3×10-5m, calculate the manning’s constant of the channel if the uniform flow depth is 1m and yn=0.6m. Given: Critical depth = 0.5m.

If the velocity of flow through a wide rectangular channel is 2m⁄s

1.	If the velocity of flow through a wide rectangular channel is 2m⁄s and the rate of change of depth is 3×10-5m, calculate the manning’s constant of the channel if the uniform flow depth is 1m and yn=0.6m. Given: Critical depth = 0.5m.
A.	0.38×10-3
B.	1.38×10-3
C.	2.38×10-3
D.	3.38×10-3
Answer» D. 3.38×10-3

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If the velocity of flow through a wide rectangular channel is 2m⁄s and the rate of change of depth is 3×10-5m, calculate the manning’s constant of the channel if the uniform flow depth is 1m and yn=0.6m. Given: Critical depth = 0.5m.

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