Question 52Electricity & Electronics - QMED

The correct answer is D) inspect electrical wiring for evidence of corrosion or discoloration at connections. This is the correct answer because regularly inspecting electrical wiring and connections for signs of corrosion or damage is a critical part of routine maintenance for deck machinery motor controllers on vessels. Corrosion or loose connections can lead to electrical issues and potential failures, so proactively checking the wiring is an important preventative measure. The other answer choices are not correct as they do not directly address the core maintenance task of inspecting electrical wiring and connections. Draining water, removing covers, and checking switch contacts are important, but do not specifically target the inspection of wiring which is the key maintenance activity described in the question.