How do you calclate power factor?

Answer 1

p.f=kW/kV.A

Answer 2

Power factor is a measure of how far out of alignment current wave is from the voltage wave form, Ideal power factor is 1 to 1 or as with most meters simply 1. Ie both wave forms are insynch thus power used is accurate to power consumed.

As power factor starts to lead or lag it appears to the watt meter that more power is being used then is actually being consumed by the device. This means a larger bill for power that you didn't actually consume.

Highly inductive or capacitive loads cause power factor to go out of synch, if you are running a capacitive load you can realign power factor by adding an inductor or vice versa.

Answer 3

Use a voltmeter to measure the supply voltage and an ammeter to measure the load current, and use the product of these to determine the apparent power of the load in volt amperes. Use a wattmeter to find the true power of the load in watts. Divide the true power by the apparent power to give you the power factor.

Answer 4

Power factor is the ratio of apparent power divided by true power. In a sinusoidal configuration, it is the cosine of the phase angle between voltage and current.

Answer 5

THE power factor is can be maintain with incandescent lamp and capacitors synchronous motors

Answer 6

by using capacitor & inductor