What are the two basic parts of the turbine assembly?

• A. The rotor and the stator
• B. The rotation and the station
• C. The guide vanes and the stator
• D. The rotator and the turbine wheel

Answer: (A)

The main idea here is that a turbine assembly is made of two fundamental parts: a rotating portion and a stationary portion—the rotor and the stator. The rotor consists of disks with turbine blades that spin on the engine’s shaft, turning mechanical energy from the high‑energy gas into usable shaft power. The stator stays fixed and uses stationary vanes to guide and shape the gas flow into the rotor, helping to direct energy efficiently onto the rotor blades. In many designs, nozzle guide vanes are part of the stator to optimize flow entering the rotating blades. This two‑part arrangement—moving rotor paired with stationary stator—is what enables the turbine to extract energy from the gas stream and drive the engine components. Other terms either describe elements of the flow path or use nonstandard names for the basic components, but they don’t capture the essential split between rotating and stationary parts.