Allied & ICAR Exam Bank • ALLIED_1179 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Open Channel Flow

Subtopic: Specific Energy

Question Statement:

Water flows at depth $y = 1.0\text{ m}$ with velocity $V = 3.0\text{ m/s}$ in a rectangular channel. Taking $g = 9.81\text{ m/s}^2$, the specific energy $E = y + \frac{V^2}{2g}$ in meters of water is:

Answer Key:

1.46

Step-by-Step Solution & Explanation

$E = 1.0 + \frac{3.0^2}{2 \times 9.81} = 1.0 + \frac{9.0}{19.62} = 1.0 + 0.4587 \approx 1.459\text{ m}$.
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