Where do exhaust gases leave the power turbine?

The exhaust gases leave the power turbine through the exhaust ports. This is a crucial part of the turbine engine's operation, as the power turbine is designed to extract energy from the high-temperature, high-pressure exhaust gases produced after combustion. Once the gases pass through the power turbine, they exit through these exhaust ports. This pathway allows the engine to efficiently expel used gases while enabling the turbine to convert some of the exhaust energy into mechanical energy, which drives the propeller and powers the aircraft.

The other options do not accurately represent the exit pathway for exhaust gases. The combustion chamber is where fuel and air mix and burn, while the intake manifold is involved in supplying air to the combustion process. The fuel system, on the other hand, is responsible for delivering fuel to the engine, and it does not serve as an exit path for exhaust gases. Thus, understanding the role of the exhaust ports is key to grasping how turbine engines operate effectively.