Final answer:
The turbine section of a gas turbine engine transforms exhaust gases into mechanical energy.
Step-by-step explanation:
The section of a gas turbine engine that transforms exhaust gases into mechanical energy is called the turbine.
In a gas turbine engine, hot exhaust gases are generated by burning fuel in the combustion chamber. These hot gases flow through the turbine, which consists of a series of blades mounted on a shaft. As the hot gases pass over the blades, they cause the shaft to rotate, converting the thermal energy of the exhaust gases into mechanical energy.
This mechanical energy can then be used to power various systems, such as an aircraft's propulsion or an electricity generator.