What is the role of a fan in cooling a single-phase motor?

The role of a fan in cooling a single-phase motor primarily revolves around dissipating heat generated during operation. As the motor runs, it produces heat due to electrical resistance and friction. If this heat is not effectively managed, it can lead to overheating, which can damage the motor and reduce its lifespan. The fan helps in circulating air around the motor, thereby increasing heat dissipation and maintaining optimal operating temperatures. This cooling mechanism is essential to ensure the motor functions efficiently and reliably over time.

While factors like noise reduction and power efficiency are important in motor design and operation, they are not the primary functions of the fan in this context. Similarly, while a fan may assist in starting certain types of motors, the key function illustrated in the question is focused on cooling. Therefore, the correct answer emphasizes the critical role of the fan in managing heat in single-phase motors.