Which of the following flow measuring devices is an area meter ?
Correct answer: A. Rotameter
- A. Rotameter
- B. Orificemeter
- C. Anemometer
- D. Venturimeter
Explanation
A rotameter is a variable-area meter: the float position changes the annular flow area until the pressure force and weight balance. Venturimeters and orificemeters are differential-pressure meters with essentially fixed geometry.
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