Describe the function of the accessory gearbox (AGB) in a gas turbine engine.

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Prepare for the Gas Turbine Systems Technician – Mechanical A School Test 1. Study with multiple choice questions that come with hints and explanations. Ace your exam!

Multiple Choice

Describe the function of the accessory gearbox (AGB) in a gas turbine engine.

Explanation:
The accessory gearbox provides the mechanical drive for the engine’s auxiliary devices by taking power from the engine through a gear train and delivering it to components such as the fuel pump, lubrication pump, starting motor, and electrical generators. This setup allows the engine to be started and to run its essential support systems, with the gear reduction ensuring the accessories run at appropriate speeds regardless of the core RPM. It’s not responsible for cooling the combustor, housing the main shaft, or governing main fuel metering—those functions belong to other parts of the engine or separate systems.

The accessory gearbox provides the mechanical drive for the engine’s auxiliary devices by taking power from the engine through a gear train and delivering it to components such as the fuel pump, lubrication pump, starting motor, and electrical generators. This setup allows the engine to be started and to run its essential support systems, with the gear reduction ensuring the accessories run at appropriate speeds regardless of the core RPM. It’s not responsible for cooling the combustor, housing the main shaft, or governing main fuel metering—those functions belong to other parts of the engine or separate systems.

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