Relay-contact NOR gates can be formed using either just two control relays, or with three control relays.
When three control relays are used, a set of __________ contacts on one control relay is wired in one control rung (or line) in parallel with a set of __________ contacts on a second control relay in a second control rung, and these parallel control rungs converge or connect to a common rung on their load side to control the power which is applied to a single control rung of a ladder diagram to create a relay-logic wired-__________ gate.
The output of the wired-__________ gate controls the solenoid coil of a third control relay 3CR.
In a second control line, a set of __________contacts on the third control relay are used to generate the Wired-NOR-Gate output.
A) NC; NO; OR; OR; NO
B) NC; NC; OR; OR; NC
C) NO; NO; OR; OR; NC
D) NO; NO; NOR; OR; NO
Show Answer
Answer:C
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