What is the disadvantage of a dual-entry centrifugal compressor compared to a single- entry centrifugal compressor?

Correct Answer: Option B — A dual-entry compressor utilizes a more complicated inlet ducting.

Dual-entry centrifugal compressors require complex ducting to deliver air to both sides of the impeller simultaneously. While this design increases mass flow capacity compared to single-entry units, the intricate inlet geometry creates significant aerodynamic challenges and installation complexity within the engine's intake housing.