Multiple choice

A mild-sloped channel is followed by a steep-sloped channel. The profiles of gradually varied flow in the channel are

  1. M3, S2

  2. M3, S3

  3. M2, S1

  4. M2, S2
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D Correct answer
Explanation

 In the mild sloped channel $y_n > y > Y_c$ and steep sloped channel $y_n < y < y_c$ in the flow condition for smooth transition of flow from mild sloped channel to steep sloped channel. Profile formed in mild sloped channel $M_2$ and in steep sloped channel is $S_2$. $$\\$$ Note:- $Y_c$ remains constant for the given discharge and width of the channel

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