What is the principle on which electromagnetic relays operate?
A. electromagnetic induction
B. motor control
C. switching
D. none of the mentioned
Answer:A
What is the principle on which electromagnetic relays operate?
A. electromagnetic induction B. motor control C. switching D. none of the mentioned
Explanation: Electromagnetic relays are the devices that are used for switching of devices like motors, that operates on the principle of electromagnetic induction.