All definitions of power factor of a series R-L-C circuit are correct except__________?
Correct answer: A. ratio of net reactance and impedance
- A. ratio of net reactance and impedance
- B. ratio of kW and kVA
- C. ratio of J and Z
- D. ratio of W and VA
Explanation
Power factor is kW/kVA or W/VA, equivalently the ratio of the resistance to impedance in a series R-L-C circuit. Net reactance divided by impedance gives sin φ, not cos φ, so it is not a power-factor definition.
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