In case of centrifugal fan or blower, the gas capacity varies as __________________?
Correct answer: A. Speed
- A. Speed
- B. (Speed)2
- C. (Speed)3
- D. (Speed)0.5
Explanation
For geometrically similar centrifugal fans at constant gas density, the fan laws give capacity proportional to speed, head proportional to speed squared, and power proportional to speed cubed. Hence the capacity varies directly with speed.
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