On a triple spool engine, the first stage of turbines drives

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Multiple Choice

On a triple spool engine, the first stage of turbines drives

Explanation:
In a triple-spool engine, each compressor is powered by its own turbine spool. The high-pressure compressor sits on the HP shaft and is driven by the HP turbine. The first stage of that turbine—the stage closest to the combustor—extracts energy to turn and drive the HP compressor. The other spools have their own pairings: the IP compressor is driven by the IP turbine, and the LLC (LP) spool drives the LP compressor and the fan. So the first stage of turbines drives the high-pressure compressor.

In a triple-spool engine, each compressor is powered by its own turbine spool. The high-pressure compressor sits on the HP shaft and is driven by the HP turbine. The first stage of that turbine—the stage closest to the combustor—extracts energy to turn and drive the HP compressor. The other spools have their own pairings: the IP compressor is driven by the IP turbine, and the LLC (LP) spool drives the LP compressor and the fan. So the first stage of turbines drives the high-pressure compressor.

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