railway RRB JE (CBT I + CBT II) Mock Test 2024 Network Theory Sinusoidal Steady State Analysis Power Factors
Which of the following is TRUE for the power factor of an AC circuit?
1
Power factor is the ratio of apparent power to real power.
2
Power factor is the ratio of impendence to resistance.
3
Power factor has no unit.
4
Power factor is the sin value of phase angle between voltage and current.