Question:
The weir, which commonly used to measure minimum discharges in open channels
The weir, which commonly used to measure minimum discharges in open channels
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V-notch for small flows; Rectangular for large flows.
Updated On: May 5, 2026
- Cipolletti weir
- Surface weir
- Rectangular weir
- V-notch or triangular weir
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The Correct Option is D
Solution and Explanation
Step 1: Concept
A weir is an obstruction in an open channel over which water flows to measure the discharge rate.
Step 2: Meaning
Different shapes are chosen based on the volume of water being measured.
Step 3: Analysis
The V-notch (triangular) weir is highly sensitive to small changes in water height because of its narrowing shape. This makes it the most accurate choice for measuring very low flow rates.
Step 4: Conclusion
It is the preferred tool for minimum discharge measurement.
Final Answer: (D)
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