What typically results from poor alignment of rotating machinery?

Poor alignment of rotating machinery can lead to several operational issues, among which higher maintenance costs and increased downtime are significant consequences. When machinery is misaligned, it places additional stress on components, which accelerates wear and tear, leads to early failure of parts, and necessitates more frequent repairs. This not only raises the overall maintenance costs but also results in frequent interruptions in production, reducing equipment availability and impacting productivity.

In contrast to the correct answer, other options suggest outcomes that are generally not associated with poor alignment. For example, reduced noise levels and improved product quality are unlikely since misalignment often causes increased vibration and noise, which can adversely affect the quality of the final product. Similarly, rather than enhancing mechanical efficiency, poor alignment typically results in reduced efficiency due to energy losses and friction generated by misaligned components. This underscores the importance of proper alignment in maintaining both operational efficiency and cost-effectiveness in machinery management.