Red Seal Appliance Service Technician Practice Exam

What type of appliance is primarily affected by incorrect voltage supply?

1. Refrigerators

2. Heating elements

3. Motors

4. Electronic displays

The correct answer is: Motors

Motors are particularly sensitive to incorrect voltage supply because they rely on specific voltage levels to operate efficiently. When voltage levels are too low, motors may struggle to start or may run inefficiently, potentially overheating and causing damage over time. On the other hand, if the voltage is too high, it can lead to excessive current flow, which can ultimately burn out the motor windings or lead to other failures. While other appliances like refrigerators, heating elements, and electronic displays can also be affected by incorrect voltage, motors are generally the most directly impacted due to their dependence on consistent voltage levels for torque and power generation. Variations in voltage can disrupt their operation, resulting in performance issues or complete malfunction, making it crucial to maintain the correct voltage supply to ensure they function properly.