Stability of a synchronous machine:
Correct answer: B. increases with increase in its excitation
- A. decreases with increase in its excitation
- B. increases with increase in its excitation
- C. remains unaffected with increase in excitation
- D. any of the above
Explanation
Increasing excitation raises the internal generated emf and the synchronizing power, improving the machine's steady-state stability limit. Therefore stability increases with excitation.
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