Electromagnetic Relay

Relay is an electromagnetically operated switch. It has coil and contacts.

• True

• False

The part which creates magnetic field when it is energized to attract the relay's armature is.

• Coil

• Spring

• NO Contact

• All of the above

The following are applications of using electrical relay

• Industrial Automation

• Lighting Systems

• Elevators Control Systems

• Electrical Heaters

• All of the Above

The Relay Contacts are directly connected with....................

• Coil

• Spring

• Armature

• All of the Above

When the the current flows through the coil of the relay, it will produce magnetic field which will attract the armature to close the NO contact.

• True

• False