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A synchronous machine is operating at constant load and at unity power factor. If its excitation is increased, then it operates as ___________

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A synchronous machine is operating at constant load and at unity power factor. If its excitation is increased, then it operates as ___________

(a) generator at lagging p.f

(b) motor at lagging p.f

(c) absorber of reactive power

(d) generator at leading p.f

This question was posed to me in homework.

I want to ask this question from Starting of Synchronous Motors topic in section Synchronous Motors of Electrical Machines

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The correct option is (a) generator at lagging p.f

For explanation: It will operate at lagging p.f. if it was working as generator.

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