Q93
A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have
A.
no change of power factor
B.
lagging power factor with over-excitation
C.
leading power factor with under-excitation
D.
leading power factor with over-excitation
AnswerAnswer: Option D
Solution
Answer: Option D
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