Gas Turbine Engine Knowledge Assessment

What is the primary function of the compressor in a gas turbine engine? A. To mix air with fuel B. To compress air and increase its pressure C. To cool the engine D. To expel exhaust gases

• A. To mix air with fuel

• C. To cool the engine

• D. To expel exhaust gases

• B. To compress air and increase its pressure

While performing a pre-start check, you notice that one of the fasteners on the turbine is loose. What should you do next? A. Start the engine and monitor the fastener B. Tighten the fastener before proceeding C. Ignore it if it doesn't seem too loose D. Report it and continue with the checks

• B. Tighten the fastener before proceeding

• Check other fasteners and ignore this one

• Proceed with the engine start without any checks

• Replace the fastener with a new one immediately

Which safety system prevents accidental operation of the gas turbine engine? A. Governor B. Emergency shutdown system C. Lubrication system D. Fuel system

• B. Emergency shutdown system

• D. Cooling system

• C. Ignition system

• A. Throttle control system

Which type of shaft is typically used for weight reduction? A. Solid shaft B. Hollow shaft C. Fixed pitch shaft D. Reversible pitch shaft

• Flexible shaft

• Tapered shaft

• B. Hollow shaft

• Composite shaft

If you encounter excessive vibration during the start-up of a gas turbine engine, what could this indicate? A. Fuel contamination B. Engine overspeed C. Component imbalance or failure D. None of the above

• C. Component imbalance or failure

• B. Inadequate fuel flow

• D. Engine overheating

• A. Low oil pressure

What is the purpose of the turbine in a gas turbine engine? A. To compress air B. To extract energy from hot gases C. To cool the engine D. To mix fuel and air

• A. To compress air

• B. To extract energy from hot gases

• D. To mix fuel and air

• C. To cool the engine

Which component is responsible for igniting the fuel-air mixture in a gas turbine engine? A. Compressor B. Igniter C. Turbine D. Fuel pump

• D. Air filter

• C. Heat exchanger

• B. Igniter

• A. Combustor

What is the typical operating principle of a gas turbine engine? A. Internal combustion B. External combustion C. Jet propulsion D. Rocket propulsion

• Hydraulic drive

• A. Internal combustion

• Electromagnetic propulsion

• Thermal expansion

What is the main advantage of a gas turbine engine over a reciprocating engine? A. Higher efficiency B. Lower weight C. Simplicity of design D. All of the above

• More complex design

• Higher maintenance costs

• D. All of the above

• Increased fuel consumption

What type of fuel is commonly used in gas turbine engines? A. Diesel B. Jet fuel C. Gasoline D. Ethanol

• B. Jet fuel

• Propane

• Kerosene

• Natural gas