A synchronous machine with large air gap has______________?
Correct answer: D. all of the above
- A. a higher value of stability limit
- B. a small value of inherent regulation
- C. a higher synchronizing power which makes the machine less sensitive to load variations
- D. all of the above
Explanation
A large air gap reduces synchronous reactance, which raises the stability limit and synchronizing power while improving voltage regulation. These effects make the machine less sensitive to load changes, so all statements apply.
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