Synchronsizing power of a synchronous machine is_____________?
Correct answer: B. inversely proportional to the synchronous reactance
- A. direcly proportional to the synchronous reactance
- B. inversely proportional to the synchronous reactance
- C. equal to the synchronous reactance
- D. none of the above
Explanation
Synchronizing power is the restoring power produced for a small change in torque angle, and it is proportional to the inverse of synchronous reactance, approximately proportional to 1/Xs. Thus, a larger synchronous reactance gives weaker synchronizing power.
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