Relay-contact NAND gates can be formed using either two control relays or three control relays.
When three control relays are used, two sets of __________ contacts, one set on each of two control relays, are wired in series in the same control line to form a wired- __________ gate.
The output of the wired-__________ gate then controls the solenoid coil of a third control relay.
In a second control line, a set of __________ contacts on the third control relay is used to generate the Wired-NAND-Gate output.
A) NO; NAND; NAND; NC
B) NC; NAND; AND; NO
C) NO; AND; AND; NC
D) none of the answers
Show Answer
Answer:C
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