What is a common disadvantage regarding noise in gas turbines?

Gas turbines are commonly known to generate a significant amount of noise during their operation. This is largely due to the high-speed rotation of the turbine components and the combustion process, which produces not only mechanical noise but also intense aerodynamic noise as exhaust gases exit at high velocities.

When comparing gas turbines to steam turbines, gas turbines tend to be louder primarily due to these operational characteristics. Steam turbines typically operate at lower speeds and the expansion of steam in the turbine does not produce as much high-frequency noise compared to the compression and combustion processes found in gas turbines. Therefore, the statement regarding the louder nature of gas turbines relative to steam turbines accurately highlights a common disadvantage concerning noise levels in gas turbine applications.

In contrast, operating silently is a more characteristic trait of electrical systems or certain types of boilers rather than gas turbines. High-frequency sound waves can be a component of the noise profile of gas turbines, but the emphasis on overall loudness compared to other turbine types is more significant in the evaluation of their disadvantages. The notion that noise is only produced during maintenance does not accurately reflect the continuous noise generated during regular operation, making that statement less reflective of the common noise-related drawbacks of gas turbines.