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In a series RLC circuit for lower frequency and for higher frequency, power factors are respectively ______________

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In a series RLC circuit for lower frequency and for higher frequency, power factors are respectively ______________

(a) Leading, Lagging

(b) Lagging, Leading

(c) Independent of Frequency

(d) Same in both cases

This question was addressed to me in an interview.

My query is from Applications of Signals on Circuits in portion Signals and Systems Basics of Signals and Systems

1 Answer

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Correct choice is (a) Leading, Lagging

Easiest explanation: A Leading power factor means that the current in the circuit leads the applied voltage. This condition occurs in capacitive circuits. On the other hand, a lagging power factor indicates that current lags the voltage and this condition happens in an inductive circuit.

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