🔍 Key Concepts

• Functions of the fuel oil system in a gas turbine engine • Which components or systems are normally controlled by fuel pressure or fuel actuators • Typical purposes of variable stator vanes and how they are usually controlled

💭 Think About

• Look at each option and ask: Is this something that the fuel oil system itself normally does, or is it more likely handled by a separate hydraulic, pneumatic, or control system? • Consider what the primary purposes of the fuel oil system are in a gas turbine: which options clearly match those purposes? • Think about variable stator vanes: what do they change in the engine, and what kind of control (fuel, hydraulic, pneumatic, electronic) is commonly associated with that function?

✅ Before You Answer

• Identify which options are clearly related to fuel delivery and control for combustion. • Check which functions use fuel as a working fluid (hydraulic medium) versus a separate hydraulic or control system. • Ask yourself: Which one of these jobs is least directly connected to supplying, metering, or using fuel in the combustion process?