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When excitation of synchronous motor is increased upto normal excitation from under excitation, armature current

When excitation of synchronous motor is increased upto normal excitation from under excitation, armature current Correct Answer decreases

Concept:

This question is from the concept of the V-curve of the synchronous motor V-curve is the plot between armature current (Ia) and field current (If) of the synchronous motor. V-curve of the synchronous motor is plotted below

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From the above figure, it is clear that when excitation increases from under excitation to normal excitation then armature current decreases.

Therefore, the correct option is 2.

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