Aircraft Turbine Engines Quiz-AVT-WTS

What is the primary function of a gas turbine engine in an aircraft?

• Control the landing gear

• Produce electricity

• Regulate cabin temperature

• Generate thrust

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Explain the basic working principle of a gas turbine engine.

• Mixing air with water instead of fuel

• Compressing air, mixing it with fuel, igniting the mixture, and using the hot exhaust gases to produce thrust

• Using water to produce thrust

• Using solar energy to compress air

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NGSS.HS-PS3-3

What are the main components of a gas turbine engine?

• ailerons, rudder, elevator, and flaps

• compressor, combustion chamber, turbine, and shaft

• propeller, fuel tank, exhaust pipe, and cockpit

• wings, tail, landing gear, and fuselage

Describe the process of compression in a gas turbine engine.

• Cooling the incoming air to decrease its pressure and temperature before it enters the combustion chamber.

• Squeezing the incoming air to increase its pressure and temperature before it enters the combustion chamber.

• Heating the incoming air to decrease its pressure and temperature before it enters the combustion chamber.

• Expanding the incoming air to decrease its pressure and temperature before it enters the combustion chamber.

What is the role of combustion in a gas turbine engine?

• To reduce the efficiency of the turbine

• To provide lubrication for the moving parts

• To generate high temperature and pressure gases to drive the turbine

• To cool down the engine

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How does a gas turbine engine generate thrust for an aircraft?

• By using electric power to generate thrust

• By releasing helium gas into the atmosphere

• By converting water into steam and using it to propel the aircraft

• By compressing air, mixing it with fuel, igniting the mixture, and expelling the hot exhaust gases at high speed through a nozzle.

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Discuss the concept of turbine expansion in a gas turbine engine.

• In turbine expansion, the gas does not pass through the turbine but instead bypasses it to the exhaust.

• Turbine expansion refers to the process of compressing gas in the turbine to increase pressure and temperature.

• The process where high-pressure, high-temperature gas expands through the turbine, causing the turbine blades to rotate and produce mechanical energy.

• The process where low-pressure, low-temperature gas expands through the turbine, causing the turbine blades to slow down and reduce mechanical energy.

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Explain the difference between turbojet and turbofan gas turbine engines.

• The turbojet engine uses a fan to compress air, while the turbofan engine uses a single-stage turbine.

• The turbojet engine is used for commercial aircraft, while the turbofan engine is used for military aircraft.

• The turbojet engine is more fuel-efficient than the turbofan engine.

• The turbojet engine has a single-stage turbine, while the turbofan engine has a multi-stage turbine.

What are the advantages of using a gas turbine engine in aircraft propulsion?

• Limited power output, low reliability, and inability to handle extreme weather conditions

• Low power-to-weight ratio, low efficiency, and inability to operate at high altitudes

• Noisy operation, high fuel consumption, and limited speed range

• High power-to-weight ratio, high efficiency, and ability to operate at high altitudes

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NGSS.HS-PS3-3

Describe the challenges and limitations associated with gas turbine engines in aircraft.

• Low fuel consumption, limited range, low maintenance costs, and no environmental concerns

• Low fuel consumption, extended range, low maintenance costs, and no environmental concerns

• High fuel consumption, limited range, high maintenance costs, and environmental concerns

• Unlimited range, low fuel consumption, low maintenance costs, and no environmental concerns

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