If you analyze evolution of Relays from the past to the present, what are the different groups?
A. Electromechanical Relay, Static Relay, Digital Relay and Numerical Relay
B. Solid-state relay, Static Relay and Digital Relay
C. Static Relay, Digital Relay and Numerical Relay
D. Electromechanical Relay, Static Relay and Digital Relay
Show Answer
Answer: A
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