The power turbine (PT) of the GE LM2500 gas turbine engine has a total of how many stages?

Correct Answer: Option B — Six

The LM2500 power turbine is a six-stage, free-turbine design that converts the remaining thermal energy of the gas generator exhaust into mechanical shaft power. This multi-stage arrangement allows for efficient torque conversion across varying load conditions, essential for marine propulsion applications requiring high power density.