Allied & ICAR Exam Bank • ALLIED_0514 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Water Measurement Flumes

Subtopic: Water Measurement Flumes

Question Statement:

A Parshall flume operates under free-flow conditions with throat width $W = 15.2\text{ cm}$ ($0.5\text{ ft}$). For upstream head $H_a = 0.25\text{ m}$ ($0.25^{1.58} \approx 0.1119$), the discharge $Q$ in $\text{m}^3/\text{s}$ is (rounded off to three decimal places):

Answer Key:

0.043

Step-by-Step Solution & Explanation

$Q = 0.381 \times 0.1119 = 0.0426\text{ m}^3/\text{s} \approx 0.043\text{ m}^3/\text{s}$.
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