🔍 Key Concepts

• Axial flow vs. centrifugal/radial flow compressors • Function of rotating blades (rotor) and stationary guide vanes (stator) in compressing air • Difference between impellers/diffusers and blades/vanes terminology

💭 Think About

• Think about how air moves in an axial compressor—does it move mainly along the axis or radially outward? Which components are used in that type of flow? • Which pair of terms normally describes the rotating and stationary stages in gas turbine axial compressors? • Look at each choice and decide which ones sound more like parts of a centrifugal compressor or a reciprocating machine rather than an axial compressor.

✅ Before You Answer

• Make sure the correct option includes both rotating and stationary elements working together in multiple stages. • Eliminate any answers that clearly describe reciprocating engines (pistons/liners) or centrifugal compressor parts (impeller/diffuser). • Confirm that the chosen terms match standard axial compressor terminology: rotor blades and stator/guide vanes.