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. lagging power factor with over-excitation

B. leading power factor with over-excitation

C. leading power factor with under-excitation

D. no change of power factor

Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.