Red Seal Appliance Service Technician Practice Exam

What might be a sign of a failing appliance motor?

1. Increased energy efficiency

2. Unusual noises or overheating

3. Consistent operation without issues

4. Low power consumption

The correct answer is: Unusual noises or overheating

A sign of a failing appliance motor is often indicated by unusual noises or overheating. When a motor begins to fail, it can produce sounds that are not typical of its normal operation, such as grinding, humming, or rattling. These sounds can suggest that mechanical components are wearing out or that there are issues with internal wiring or bearings. Overheating is another critical symptom; when a motor is not functioning correctly, it may draw excessive current or may not be operating efficiently, leading to increased heat generation. This heat can potentially damage the motor winding, insulation, and other components, ultimately causing failure. In contrast, signs such as increased energy efficiency, consistent operation without issues, or low power consumption would not be associated with a failing motor. These factors are generally indicative of a well-functioning appliance, as they suggest that the motor is operating as intended, efficiently converting electrical energy into mechanical motion.