Which two main sections compose a basic gas turbine engine?

Which two main sections compose a basic gas turbine engine?

• A. Cold section and hot section
• B. Cold section only
• C. Hot section only
• D. Inlet and exhaust

Answer: (C)

Two main sections make up a basic gas turbine engine: a cold section and a hot section. The cold section handles air entry and compression, including the inlet, diffuser, and compressor, where incoming air is slowed and pressurized with minimal heat added. The hot section takes over after compression, containing the combustor where fuel is burned to raise the gas temperature and the turbine where those hot, high-energy gases expand to produce shaft power. Inlet and exhaust are essential subsystems, but they are not the two primary sections that define the basic engine. Together, the cold and hot sections support the cycle of compression, combustion, and expansion that drives the turbine.

Two main sections make up a basic gas turbine engine: a cold section and a hot section. The cold section handles air entry and compression, including the inlet, diffuser, and compressor, where incoming air is slowed and pressurized with minimal heat added. The hot section takes over after compression, containing the combustor where fuel is burned to raise the gas temperature and the turbine where those hot, high-energy gases expand to produce shaft power. Inlet and exhaust are essential subsystems, but they are not the two primary sections that define the basic engine. Together, the cold and hot sections support the cycle of compression, combustion, and expansion that drives the turbine.