An alternator is delivering rated current at rated voltage and 0.8 power-factor lagging case. If it is required to deliver rated current at rated voltage and 0.8 power-factor leading, the required excitation will be (A) less. (B) more. (C) more or less. (D) the same.

An alternator is delivering rated current at rated voltage and 0.8 power-factor lagging
case. If it is required to deliver rated current at rated voltage and 0.8 power-factor
leading, the required excitation will be
 (A) less. (B) more.
 (C) more or less. (D) the same.
by

1 Answer

Answer :

Ans: B
 Over excitation gives leading power factor and under excitation gives lagging p.f .
by

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