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If the synchronous motor connected to the infinite bus bar delivers positive reactive power to it, then it must be operating at __________

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If the synchronous motor connected to the infinite bus bar delivers positive reactive power to it, then it must be operating at __________

(a) leading pf

(b) lagging pf

(c) zero pf

(d) unity pf

The question was asked in class test.

This key question is from Power Flow Through an Inductive Impedance topic in chapter Efficiency and Regulation of Electrical Machines

1 Answer

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Best answer
Right answer is (a) leading pf

Best explanation: An over excited synchronous motor will act as a source of the reactive power and it will operate at leading pf.

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