The basic gas turbine engine is divided into cold and hot sections. The cold section includes which components?

The basic gas turbine engine is divided into cold and hot sections. The cold section includes which components?

• A. Inlet, compressor, diffuser
• B. Combustion, turbine, exhaust
• C. Inlet, exhaust
• D. Compressor, diffuser, turbine

Answer: (A)

The cold section of a basic gas turbine handles air before any combustion, focusing on guiding and pressurizing that air. It includes the inlet that brings air into the engine, the diffuser that slows and converts velocity into pressure, and the compressor that further raises the air pressure for efficient combustion. The hot section starts after combustion and includes the combustion chamber, the turbine, and the exhaust where temperatures are high and work is extracted. Therefore, the set that lists inlet, diffuser, and compressor is the cold section. The other options mix in hot-section components or omit essential cold-section elements.

The cold section of a basic gas turbine handles air before any combustion, focusing on guiding and pressurizing that air. It includes the inlet that brings air into the engine, the diffuser that slows and converts velocity into pressure, and the compressor that further raises the air pressure for efficient combustion. The hot section starts after combustion and includes the combustion chamber, the turbine, and the exhaust where temperatures are high and work is extracted. Therefore, the set that lists inlet, diffuser, and compressor is the cold section. The other options mix in hot-section components or omit essential cold-section elements.