What is relay

Question

What is relay

Accepted Answer

A relay is an electrically operated switch that uses an electromagnet to mechanically control the opening and closing of contacts.

Relays are commonly used in electrical systems to control high-power devices with low-power signals.
They can be used to control motors, lights, solenoids, and other electrical components.
Relays have an input coil that generates a magnetic field when current flows through it, causing the contacts to open or close.
They provide isolation between the control circuit and the controlled circuit, protecting sensitive electronics.
Relays can be categorized into different types such as electromagnetic relays, solid-state relays, thermal relays, etc.

Accepted Answer

A relay is an electrically operated switch that uses an electromagnet to mechanically control the opening and closing of contacts.

Relays are commonly used in electrical systems to control high-power d...read more

Accepted Answer

A relay is an electrically operated switch that uses an electromagnet to mechanically control the opening and closing of contacts.

Relays are commonly used in electrical systems to control high-power d...read more

Popular interview questions of Electrical Engineer