Question:medium

The hydraulic radius in channel ____________ with ____________ in wetted perimeter for a given cross-sectional area

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Remember:
\[ R = \frac{A}{P} \] For constant Area (\(A\)):
- If Perimeter (\(P\)) \(\uparrow\), then Hydraulic Radius (\(R\)) \(\downarrow\).
Minimizing the wetted perimeter reduces frictional resistance, which maximizes the hydraulic radius and flow velocity.
Updated On: Jul 21, 2026
  • increases, increase
  • decreases, decrease
  • decreases, increase
  • remains constant, increase
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The Correct Option is C

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