Which statement best distinguishes axial-flow and centrifugal compressors and notes an advantage of each?

• A. Axial-flow uses multiple rotor/stator stages for high pressure rise with good efficiency; advantage: high pressure rise. Centrifugal uses a single impeller with high surge margin and simpler design; advantage: simple design.
• B. Centrifugal compressors use multiple rotor stages; advantage: high efficiency; Axial-flow uses a single impeller; advantage: simple design.
• C. Axial-flow uses a single impeller with high surge margin; advantage: simple design; Centrifugal uses multiple rotor/stator stages; advantage: high efficiency.
• D. Axial-flow uses a fan-based approach; advantage: low cost; Centrifugal uses axial blades; advantage: compact.

Answer: (A)