The armature current of the synchronous motor has higher values for_____________?
Correct answer: C. both A. and (b)
- A. high excitation only
- B. low excitation only
- C. both A. and (b)
- D. none of the above
Explanation
The armature current is minimum near unity power factor at normal excitation. Both under-excitation and over-excitation increase the reactive component, so the current rises in either case.
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