Question

what is the power factor of transformer at no load? ​

Answer 1

Explanation:

The power factor measured at the primary of the transformer is the result of applying the source voltage to the combined impedance of the transformer equivalent circuit and the load. The power factor at the secondary of the transformer is determined only by the load circuit.

Answer 2

TRANSFORMER

A transformer is a device that reduces or increases the electrical force (voltage) that enters an electrical device.

POWER FACTOR OF TRANSFORMER AT NO LOAD:

* In the absence of a load, the current taken by the transformer may be divided into two parts:

*Current with a magnetizing component (current that creates flux in the transformer) (watt less current).

*Core or iron losses (eddy + Hysterysis loss) are taken into consideration in this current (watt full current).

When there is no load.

*The current magnetizing component is 4 to 6 percent of full load current &

*The current that accounts for core or iron loss is 1 to 2% of the full load current.

As a result, the magnetizing current is substantially more than the watt current, and the transformer had an extremely low power factor of approximately 0.2 lag when there was no load.