Interview Questions and Answers

Generators provide backup power during outages and can be used in remote locations.

• Provides backup power during outages

• Can be used in remote locations where power grid is not available

• Used in construction sites, camping trips, outdoor events, etc.

Electric current is the flow of electric charge through a conductor.

• Electric current is measured in Amperes (A).

• It is caused by the movement of electrons in a conductor.

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

• Examples of sources of electric current include batteries and power outlets.

A resistor is an electronic component that resists the flow of electrical current.

• Resistors are used to control the amount of current flowing in a circuit.

• They are measured in ohms (Ω) and have color-coded bands to indicate their resistance value.

• Resistors dissipate energy in the form of heat when current flows through them.

• Examples of resistors include carbon film resistors, metal film resistors, and wirewound resistors.

Stator is the stationary part of an electric motor or generator.

• Stator is the stationary component in an electric motor or generator that surrounds the rotor.

• It does not rotate and is responsible for producing a magnetic field to interact with the rotor.

• Examples include the stator in a car alternator or the stator in a wind turbine generator.

DC motors have advantages such as high starting torque, easy speed control, and simple construction.

• High starting torque allows for quick acceleration

• Easy speed control through voltage adjustment

• Simple construction with fewer parts and lower cost

• Efficient operation with minimal energy loss

• Suitable for applications requiring constant speed or variable speed operation