Allied & ICAR Exam Bank • ALLIED_1192 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Open Channel Flow

Subtopic: Chezy's Formula

Question Statement:

In Chezy's velocity formula $V = C \sqrt{R S}$, if Chezy's coefficient is $C = 50\text{ m}^{1/2}\text{/s}$, , and channel bed slope $S = 0.0025$, the flow velocity in m/s is:

Answer Key:

2.0

Step-by-Step Solution & Explanation

$\sqrt{R S} = \sqrt{0.64 \times 0.0025} = \sqrt{0.0016} = 0.04\text{ m}$. Velocity $V = 50 \times 0.04 = 2.0\text{ m/s}$.
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