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_____________?

Electrical Engineering Mcqs

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

Submitted By :Ali Uppal

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