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Calculate the value of frictional slope for a rectangular channel having width 5m and depth 3m. Given:V=2 m/s and n = 0.012.

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+1 vote
in Fluid Mechanics by (118k points)
Calculate the value of frictional slope for a rectangular channel having width 5m and depth 3m. Given:V=2 m/s and n = 0.012.

(a) 2.01×10^-4

(b) 3.01×10^-4

(c) 4.01×10^-4

(d) 5.01×10^-4

I have been asked this question in an online interview.

My question is taken from Gradually Varied Flow(GVF) in section Non Uniform Flow in Channels of Fluid Mechanics

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Correct option is (d) 5.01×10^-4

The explanation: Friction slope is same as slope of energy line and the same equations are applicable.

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