The power turbine section contains which of the following components?

The power turbine section of the T-6B engine is specifically designed to convert the energy from the high-temperature exhaust gases into mechanical energy to drive the propeller. The components that make up this section are crucial for maintaining the functionality and performance of the aircraft.

The propeller shaft is essential as it transmits the mechanical power generated by the power turbine to the propeller, allowing for thrust production. The reduction gearbox plays a significant role in adjusting the speed of the turbine output to match the required propeller speed, ensuring efficient operation. The exhaust case is another important component, as it directs the flow of exhaust gases through the power turbine, facilitating its operation. Finally, the power turbine itself is the component that extracts energy from the exhaust gases, enabling the overall propulsion system to function effectively.

In contrast, the other choices contain components that are either part of different sections or do not directly contribute to the power turbine section itself. This distinction is crucial for understanding the layout and function of each component within the T-6B's engine architecture.