Which of the following could be a result of incorrect heater size in a motor?

Choosing the incorrect heater size in a motor can lead to motor overheating. The heater is essential in maintaining the operating temperature of the motor by providing the necessary thermal management. If the heater is too small for the motor's needs, it may not effectively dissipate heat, causing the motor to overheat during operation. This can lead to various problems, including reduced efficiency, premature wear, and potential failure of the motor components.

The fundamental role of heater sizing is to ensure that temperature levels stay within safe operating limits, which is crucial for maintaining performance and reliability. When the motor overheats, it can trigger protection mechanisms, leading to shutdowns and potentially damaging the motor's windings, bearings, and other critical parts. Hence, selecting the appropriate heater size is vital for optimal motor performance and longevity.