What is an advantage of the centrifugal-flow compressor?

The advantage of a centrifugal-flow compressor is its ability to achieve a high pressure rise per stage. This characteristic is particularly beneficial in applications where space and weight are critical factors, such as in aircraft engines. The centrifugal-flow design allows for a significant increase in static pressure as the air moves through the compressor stage, primarily due to the conversion of kinetic energy into pressure energy as the air is flung outward by the rotating impeller.

This efficient pressure rise is one reason centrifugal compressors are often chosen for specific applications, such as smaller gas turbines or turbochargers, where a compact yet powerful design is needed. The design utilizes a relatively short length, making it suitable for applications where volumetric efficiency is essential, providing a good balance of performance and size.

While the other options may have their benefits in different contexts—such as noise reduction in some designs, compactness in terms of foot print, or straightforward construction—the primary distinguishing feature of a centrifugal-flow compressor is its capability for high pressure rise within a single stage, which is why that answer stands out as correct.