EASA Gas Turbine Engine Practice Test

Where is the highest pressure location in a gas turbine located according to the material?

At the nozzle exit At the burner exit Just after the last compressor stage but before the burner Ambient outside the engine

Correct Answer:

Just after the last compressor stage but before the burner

Explanation:

In a gas turbine, pressure increases through the compressor and is at its peak right after the last compressor stage, just before the burner. The combustor adds heat but operates at essentially the same pressure as the compressor discharge, with only a small loss due to flow friction and heat addition. After combustion, the flow goes to the nozzle where it expands to ambient, so the pressure drops back toward ambient by the time it exits. Therefore, the highest overall pressure in the cycle is at the compressor discharge, just before the burner.

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