Question 168Electricity & Electronics - Assistant Engineer

70% to pass

Which of the following methods should be used to dress the face of silver-plated contacts?

AKnurling with a knurling tool
BFiling with a mill file
CBurnishing with a burnishing tool
DSanding with 0000 sandpaper
AI Explanation

The correct answer is D) Sanding with 0000 sandpaper. To dress the face of silver-plated contacts, sanding with 0000 sandpaper is the recommended method. This gentle abrasive action helps to remove any oxidation or tarnish on the contact surface, restoring a clean, conductive finish without damaging the underlying silver plating. The fine grit of 0000 sandpaper ensures a smooth, polished appearance without removing too much material. The other options, such as knurling, filing, or burnishing, are not suitable for delicate silver-plated contacts as they could potentially scratch or deform the surface, compromising the integrity of the electrical connection.

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Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
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