Tennessee Wastewater Operator Practice Exam

What function do bearings serve in blower systems?

1. To provide cushioning for the blower fan

2. To allow smooth rotation of moving parts

3. To decrease noise output

4. To prevent air leakage

The correct answer is: To allow smooth rotation of moving parts

Bearings in blower systems are crucial components that facilitate the smooth and efficient rotation of moving parts, particularly the rotor or fan within the blower. By reducing friction between the rotating shaft and its housing, bearings enable the moving parts to operate with minimal resistance. This smooth rotation is essential for maintaining proper airflow and performance within the blower system. Furthermore, effective bearings contribute to the longevity and reliability of the blower by minimizing wear and tear on the components. When bearings function correctly, they help maintain the alignment and stability of the moving parts, which is vital for the overall efficacy of the blower in maintaining the desired air pressure and flow rate. While bearings may indirectly contribute to reduced noise and vibration levels (which are benefits of smooth operation), their primary function remains centered on facilitating rotation. Therefore, selecting the option that identifies the role of bearings in promoting smooth operation aligns directly with their intended purpose in blower systems.