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What feature of triangular notches makes them so effective at measuring low flow rates?
11. What feature of triangular notches makes them so effective at measuring low flow rates?
- Their narrower crest width
- Their smoother flow transition
- Their increased discharge coefficient
- Their larger crest height
Answer: A) Their narrower crest width
Explanation:
Because triangular notches have a narrower crest width than rectangular notches, they provide a better response in properly measuring low flow rates by improving the measurement's sensitivity to small changes in water level.