Electrical Research & Development Association Interview Questions, Process, and Tips

Power factor meter measures the power factor of an AC circuit.

• There are two types of power factor meters - electrodynamic and static.

• Electrodynamic power factor meters use a moving coil and a fixed coil to measure power factor.

• Static power factor meters use electronic circuits to measure power factor.

• Power factor meters are important in maintaining efficient power usage and reducing energy costs.

The voltage between two phase wiring depends on the specific electrical system and can vary.

• The voltage between two phase wiring can be 220 volts in residential systems.

• In industrial systems, the voltage can be higher, such as 415 volts.

• Different countries may have different standard voltages for phase wiring.

• It is important to consult electrical codes and regulations for accurate voltage information.