Electrical Training Engineer Interview Questions and Answers

The formula for I squared R is used to calculate the power dissipated in a resistor.

• I squared R is equal to the current (I) squared multiplied by the resistance (R)

• It is commonly used in electrical engineering to determine the power loss in a resistor

• For example, if the current flowing through a resistor is 2A and the resistance is 5 ohms, the power dissipated can be calculated as (2^2) * 5 = 20 watts

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).

• Rectifiers are commonly used in power supplies to convert AC voltage to DC voltage.

• They consist of diodes that allow current to flow in only one direction.

• Rectifiers are used in various applications such as battery charging, electroplating, and welding.

• Examples of rectifiers include half-wave rectifiers, full-wave rectifiers, and bridge rectifiers.

A power system is a network of electrical components used to generate, transmit, and distribute electrical power.

• Power systems consist of power plants, transformers, transmission lines, and distribution networks.

• They are designed to deliver electricity from power plants to consumers.

• Power systems can be categorized into three main types: generation, transmission, and distribution.

• Examples of power systems include the electrical grid, solar power plants, and wind farms.

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, called the primary and secondary, wrapped around a magnetic core.

• When an AC current flows through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.

• Transformers are used...read more