Wastewater New York State Practice Exam

If oxidation is found on the slip rings of an electrical motor, what should be the next step?

1. Clean off the oxidation immediately

2. Replace the slip rings

3. Leave the oxidation for proper electrical flow

4. Inspect for further signs of damage

The correct answer is: Leave the oxidation for proper electrical flow

In the scenario where oxidation is found on the slip rings of an electrical motor, the best course of action involves evaluating the impact of that oxidation on the motor's performance. It's important to note that oxidation can impede electrical flow, leading to inefficiencies and potential operational issues. Therefore, simply leaving the oxidation as is — option C — would not be advisable as it could result in further deterioration of the electrical connectivity and performance of the motor. Cleaning off the oxidation, as mentioned in another choice, is typically the appropriate response as it directly addresses the buildup that might obstruct electrical contact. Inspecting for further signs of damage is also crucial because it could reveal underlying issues, but should be done alongside cleaning or further maintenance. Replacing the slip rings could be considered if there is significant damage or corrosion, but that's usually a more drastic and expensive step that isn't warranted for mere oxidation. In summary, the presence of oxidation should lead to a proactive approach, such as cleaning, rather than neglecting the issue for the sake of preserving electrical flow.