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The reactive power flow is outward from an alternator, then the alternator works at ____________

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The reactive power flow is outward from an alternator, then the alternator works at ____________

(a) lagging power factor

(b) leading power factor

(c) zero power factor

(d) normal power factor

The question was asked in an interview.

I'm obligated to ask this question of Power Flow Through an Inductive Impedance in section Efficiency and Regulation of Electrical Machines

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The correct answer is (a) lagging power factor

Easy explanation: As the reactive power is positive the power factor based on the standard convention should be lagging.

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