Power factor is defined as the ratio of true power to apparent power:- Give an expression for power factor.

Power factor is defined as the ratio of true power to apparent power:-Calculate average power it.The A.C circuit is purely inductive.

Power factor is one for-

Which is used as rotor in the power generators ?

The current through an AC circuit depends on the magnitude of the applied voltage and impedance of the circuit: Draw an impedance diagram of a series LCR circuit and write the expression for the power factor from the diagram.