Tennessee Wastewater Operator Practice Exam

What is the primary use of rubber couplings in blower systems?

1. To increase blower speed

2. To connect blower inlets and outlets to piping

3. To reduce energy consumption

4. To facilitate easy maintenance

The correct answer is: To connect blower inlets and outlets to piping

The primary use of rubber couplings in blower systems is to connect blower inlets and outlets to piping. Rubber couplings provide a flexible and secure joint that accommodates any misalignments between the blower and the connected piping. This flexibility helps to absorb vibrations produced by the blower, reducing stress on the system and extending the life of both the blower and the piping. Additionally, rubber couplings are essential in preventing leaks at the connection points, ensuring that both air and pressure remain consistent throughout the system. Their ability to handle slight movements caused by thermal expansion and contraction is crucial for maintaining operational efficiency. The other options do have merits, but they do not encompass the primary function of rubber couplings in this context. For instance, increasing blower speed or reducing energy consumption relates to blower performance rather than the coupling's role. Similarly, while rubber couplings can facilitate maintenance by allowing for easier disconnection and reattachment, this is a secondary benefit rather than their primary purpose.