Relay-contact Exclusive-NOR gates can be formed using either just two control relays, or with three control relays.
To create a wired-Exclusive-NOR gate using three control relays, the output of the Wired-OR gate within the wired-Exclusive-OR gate is applied to the solenoid coil of a third control relay.
Taking the output from the load side of a set of NC control-relay contacts of the third control relay in another control line creates the required Wired-NOT gate for the Exclusive-NOR gate.
A) True
B) False
Show Answer
Answer:A
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