🔍 Key Concepts

• Gas turbine fuel system components: fuel service pumps, fuel manifolds, and fuel control valves • Difference between fuel supply pressure (from pumps) and manifold pressure (at the burners/nozzles) • Role of gas generator speed/rotation in enabling fuel pressurization and combustion

💭 Think About

• Which component or action actually causes fuel to be delivered into the manifold at the burners, rather than just circulating in a loop? • Does rotating the gas generator alone create fuel pressure, or does it enable another system to start metering/pressurizing fuel? • What effect does opening or closing a recirculating/bypass valve have on pressure in a piping system?

✅ Before You Answer

• Identify which option directly affects fuel flow through the nozzles/manifold, not just in the supply line or pump discharge • Consider whether the fuel is being bypassed/recirculated back to the tank or directed into the manifold • Verify which action is normally associated with establishing minimum pressure for light‑off in gas turbine burners