Engine Refrigeration (Supplementary) USCG Question #139 (Set 3)

Zinc plates commonly found in refrigeration systems and used as sacrificial anodes are located where?

Official USCG Answer & Rule Citation

Correct Answer: Option B — saltwater side of the condenser

Sacrificial zinc anodes are installed directly within the saltwater circulating spaces of shell-and-tube condensers to mitigate galvanic corrosion between dissimilar metals by corroding preferentially over critical copper-nickel or steel components.

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