Marine Electrical Systems USCG Question #920 (Set 31)

Referring to figure "2" of the illustration, what type of logic gate is symbolized? EL-0035

USCG Exam Illustration EL-0035
USCG Examination Diagram: Illustration EL-0035
Official USCG Answer & Rule Citation

Correct Answer: Option C — NOR gate

The symbol featuring an OR gate shape coupled with a negation bubble at the output designates a NOR gate, yielding an inverted OR function standard in marine alarm logic schematics.

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