Question

Relay is a kind of A) sensor B)actuatorc)hub D) router

Answer 1

A relay is a sensor.

Answer 2

The answer is A) sensor

Explanation:

• A "relay" is an "electromagnetic" device switch that works with minimal electric current which can turn on or off a much bigger electric current.
• A "sensor" is a device which produces only small electric currents, which is to detect changes in the environment.
• An actuator is a device which helps to bring about necessary mechanical movements.
• A router is a networking device that forwards data packets between computer networks.
• A "hub" is a node in the network which broadcasts information to every computer.