Allied & ICAR Exam Bank • ALLIED_0385 MCQ • 1 Mark

Section 4: Soil and Water Conservation Engineering

Open Channel Flow

Subtopic: Open Channel Flow

Question Statement:

The energy loss $\Delta E$ in a hydraulic jump in a horizontal rectangular channel with conjugate depths $y_1$ and $y_2$ is:

Options:

  • (A) $\Delta E = \frac{(y_2 - y_1)^3}{4 y_1 y_2}$
  • (B) $\Delta E = \frac{(y_2 - y_1)^2}{2 y_1 y_2}$
  • (C) $\Delta E = \frac{(y_2 - y_1)^3}{2(y_1 + y_2)}$
  • (D) $\Delta E = \frac{y_2 - y_1}{4}$

Answer Key:

A

Step-by-Step Solution & Explanation

Energy head loss in a rectangular jump is $\Delta E = \frac{(y_2 - y_1)^3}{4 y_1 y_2}$.
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