Marine Electrical Systems USCG Question #338 (Set 12)

What is the purpose of the capacitor within component "5" of the circuit shown in figure "B" of the illustration? Illustration EL-0081

USCG Exam Illustration EL-0081
USCG Examination Diagram: Illustration EL-0081
Official USCG Answer & Rule Citation

Correct Answer: Option C — prolong the life of the component's contacts

The capacitor connected across the automatic starter contacts in fluorescent circuits absorbs high-voltage inductive kickback arcs generated when the bimetallic switch opens, significantly reducing contact pitting and prolonging operational lifespan in compliance with marine engineering practices.

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