A synchronous machine with low value of short-circuit ratio has___________?
Correct answer: A. lower stability limit
- A. lower stability limit
- B. high stability limit
- C. good speed regulation
- D. good voltage regulation
- E. none of the above
Explanation
A low short-circuit ratio means a relatively high synchronous reactance, reducing the maximum power-transfer angle and hence the stability limit. It also generally gives poorer voltage regulation, not good regulation.
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