GATE CE 2023 Set 1 — Question 19
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Water Resources Engineering → Hydraulic Jump & Varied Flow → Classification of GVF Profiles
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Question
When a supercritical stream enters a mild-sloped (M) channel section, the type of flow profile would become ________.
Correct answer
(C) M₃
Solution
In a mild-sloped channel (), the normal depth () is greater than the critical depth (). When a supercritical stream () enters this section, the flow depth is less than both and . This places the flow in Zone 3. The profile formed in Zone 3 of a mild slope is the profile. Eventually, the flow will transition to subcritical via a hydraulic jump to reach the downstream depth.
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