Question 6Electricity & Electronics - Assistant Engineer

The correct answer is D) inspect electrical wiring for evidence of corrosion or discoloration at connections. The reasoning behind this is that as part of a routine maintenance program for deck machinery motor controllers, it is important to visually inspect the electrical wiring and connections for any signs of corrosion or discoloration. This helps identify and address potential issues with the electrical system before they lead to more serious problems. The other options, such as checking drum switch contact pressure or removing and draining covers, are not directly related to the key maintenance task of inspecting the wiring and connections for corrosion.