A gas turbine engine comprises which three main sections?

• A. Compressor, diffuser, and stator.
• B. Turbine, compressor, and combustion.
• C. Turbine, combustion, and stator.
• D. Compressor, turbine, and combustor.

Answer: (B)

Gas turbine engines transform energy in three essential blocks: compressing air, burning fuel to add heat, and extracting energy with a turbine. The compressor raises the air pressure, the combustor adds heat by burning fuel, and the turbine uses that hot gas to produce power (and drive the compressor). Listing the three main sections as turbine, compressor, and combustion includes exactly those blocks, and the order doesn’t matter for identifying the main parts. The other items in the choices point to components that aren’t the primary sections (like diffuser or stator) or omit a needed stage, so the triple of turbine, compressor, and combustion is the correct set.