Qualcomm Mst Electrician Interview Questions and Answers

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• They consist of two coils of wire, known as the primary and secondary coils, which are wrapped around a magnetic core.

• When an AC voltage is applied to the primary coil, it creates a magne...read more

Current is the flow of electric charge through a conductor.

• Current is measured in amperes (A).

• It is caused by the movement of electrons.

• The direction of current flow is from positive to negative.

• Current can be either direct current (DC) or alternating current (AC).

Voltage is the measure of electric potential difference between two points in a circuit.

• Voltage is measured in volts (V).

• It is the force that drives electric current through a circuit.

• Higher voltage means more energy is available to move electrons.

• Voltage can be either AC (alternating current) or DC (direct current).