How many stages are in the HP turbine of the GE LM2500 gas turbine engine?

Correct Answer: Option B — Two

The GE LM2500 high-pressure turbine is a two-stage axial flow turbine. These stages extract energy from the high-temperature, high-pressure gas stream exiting the combustor to drive the compressor rotor. This configuration is optimized for the engine's specific Brayton cycle pressure ratio and thermal efficiency requirements.