🔍 Key Concepts

• Gas turbine engine (GTE) compressor types and how they move air • Difference between centrifugal (radial-flow) and axial-flow compressors in terms of airflow volume • How engine layout names (single‑shaft, twin‑spool, split‑shaft) relate to the shaft arrangement, not necessarily the compressor type

💭 Think About

• First, decide which choice describes a compressor design rather than just how many shafts or spools the engine has. • Think about which basic compressor type is known for moving very large quantities of air at relatively lower pressure per stage, especially in high‑power gas turbines. • Consider whether "single‑shaft," "twin‑spool," or "split‑shaft" by themselves tell you anything about air volume capacity without specifying the compressor type.

✅ Before You Answer

• Identify which option directly names a compressor type rather than a shaft/spool configuration. • Recall which compressor type is associated with high mass airflow versus which is associated with higher pressure ratio per stage but smaller flow. • Before choosing, be sure you are not confusing shaft arrangement (how turbines and compressors are connected) with air volume capacity (a compressor characteristic).