A gas turbine in which exhaust gas heat energy is added to the air charge between the compressor and combustion chamber is classified as a/an?

Correct Answer: Option D — Regenerative cycle engine.

A regenerative cycle engine utilizes a heat exchanger, or regenerator, to capture thermal energy from the exhaust gases. This heat is transferred to the compressed air before it enters the combustion chamber, reducing the fuel required to reach the target turbine inlet temperature and significantly improving overall thermal efficiency.