No. The volt ampere (V.A) is the unit of measurement of apparent power.

Power factor is true power (expressed in watts) divided by apparent power (expressed in volt amperes).

The ratio of active power (real power) and apparent power is called power factor

( pf ).

Power Factor ( pf ) = Active Power / Apparent Power

= .................. ( kvar )

If a load takes 50 kW at a power factor of 0.5 lagging calculate the apparent power and reactive power Answer: Apparent power = Active power / Power Factor In this case, Active power = 50 kW and power factor = 0.5 So Apparent power = 50/0.5 = 100 KVA

Apparent Power=Active Power+Reactive Power

or

Active Power=VI Cos(Phase Angle)

Reactive Power=VI Sin(Phase Angle)

Apparent Power= VI

The ratio of apparent power to true power is called 'admittance', expressed in siemens. Admittance is the inverse of impedance.