What leads airflow to the turbine?

• A. Compressor rotor blades
• B. Ignition plugs
• C. Nozzle guide vanes
• D. Exhaust outlet

Answer: (C)

Nozzle guide vanes are the stationary blades that sit between the compressor and the turbine. Their job is to straighten and direct the high‑speed air leaving the compressor so it enters the turbine at the proper angle. By removing swirl and shaping the flow, they ensure the air reaches the turbine with the right velocity and direction to maximize energy transfer. The compressor rotor blades generate and push the flow toward the turbine, ignition plugs are for starting and combustion, and the exhaust outlet is where the spent gases exit after passing through the turbine.