PT6A-60 Series Engine Quiz

What is the function of the oil system in the PT6A-60 series engine?

• To regulate fuel flow

• To control propeller pitch and speed

• To provide air for combustion

• To cool, lubricate, and clean various engine components

Answer explanation

The oil system in the PT6A-60 series engine is responsible for cooling, lubricating, and cleaning various engine components.

What is the purpose of the oil tank pressurizing valve?

• To provide pressure air for cooling

• To separate oil particles from air

• To reduce oil pressure fluctuation

• To prevent oil from leaking outside the bearing cavities

Answer explanation

The purpose of the oil tank pressurizing valve is to reduce oil pressure fluctuation.

What is the function of the chip detector in the PT6A-60 series engine?

• To provide air for turbine cooling

• To regulate oil temperature

• To warn of metal particle contamination in the engine oil system

• To seal the bearing compartments

Answer explanation

The chip detector in the PT6A-60 series engine is used to warn of metal particle contamination in the engine oil system.

What is the purpose of the accessory gearbox breather in the engine?

• To prevent oil from leaking outside the bearing cavities

• To provide pressure air for cooling

• To separate oil particles from air

• To cool the combustion chamber

Answer explanation

The purpose of the accessory gearbox breather is to separate oil particles from air, preventing contamination and ensuring proper functioning of the engine.

What is the main function of the secondary air system in the PT6A-60 series engine?

• To provide air for combustion

• To cool the combustion gases

• To operate the fuel control unit

• To provide pressure air for sealing the bearing compartments

Answer explanation

The main function of the secondary air system in the PT6A-60 series engine is to provide pressure air for sealing the bearing compartments.

What is the purpose of the turbine cooling and air bleed system in the engine?

• To prevent oil from leaking outside the bearing cavities

• To provide air for combustion

• To cool the combustion chamber

• To separate oil particles from air

Answer explanation

The turbine cooling and air bleed system is designed to cool the combustion chamber, ensuring optimal engine performance.

What is the role of the oil tank in the PT6A-60 series engine?

• To operate the fuel control unit

• To store and supply oil for lubrication

• To cool the combustion gases

• To provide air for combustion

Answer explanation

The oil tank in the PT6A-60 series engine is responsible for storing and supplying oil for lubrication, ensuring smooth operation and reducing friction.

What is the function of the oil pressure regulating valve in the engine?

• To prevent oil from leaking outside the bearing cavities

• To maintain engine oil pressure within specified limits

• To separate oil particles from air

• To reduce oil pressure fluctuation

Answer explanation

The oil pressure regulating valve maintains engine oil pressure within specified limits.

What is the purpose of the bearing compartment sealing in the PT6A-60 series engine?

• To provide pressure air for cooling

• To operate the fuel control unit

• To cool the combustion chamber

• To prevent oil from leaking outside the bearing cavities

Answer explanation

The purpose of bearing compartment sealing in the PT6A-60 series engine is to prevent oil from leaking outside the bearing cavities.

What is the main source of air used in the secondary air system of the engine?

• P2.5 Compressor Inter-stage air pressure

• P3 Compressor delivery pressure

• P2.5 and P3 Compressor delivery pressure

• P3 Compressor Inter-stage air pressure

Answer explanation

The main source of air used in the secondary air system of the engine is the P2.5 and P3 Compressor delivery pressure. It provides the necessary air for the system to function properly.