Question 1

Which type of compressor is most commonly used in aircraft gas turbine engines?

Accepted Answer

Centrifugal compressor

Answer

Diagonal compressor

Answer

Reciprocating compressor

Answer

Axial compressor

Question 2

Which of the following is the correct order of processes in a Brayton cycle?

Accepted Answer

Compression, Combustion, Expansion, Exhaust

Answer

Combustion, Compression, Expansion, Exhaust

Answer

Combustion, Expansion, Compression, Exhaust

Answer

Expansion, Combustion, Compression, Exhaust

Question 3

What is the purpose of the compressor in a Brayton cycle?

Accepted Answer

To increase the pressure of the air

Answer

To increase the temperature of the air

Answer

To remove heat from the air

Answer

To add fuel to the air

Question 4

What is the main component responsible for the conversion of heat energy to mechanical energy in a Brayton cycle?

Accepted Answer

Turbine

Answer

Combustion chamber

Answer

Exhaust system

Answer

Compressor

Question 5

What is the purpose of the heat exchanger in a Brayton cycle?

Accepted Answer

To transfer heat from the exhaust gas to the compressed air

Answer

To increase the pressure of the compressed air

Answer

To convert heat energy to electrical energy

Answer

To remove impurities from the exhaust gas

Question 6

In an ideal Brayton cycle, how does an increase in the pressure ratio influence the thermal efficiency?

Accepted Answer

It increases the thermal efficiency

Answer

It has no effect on the thermal efficiency

Answer

It can either increase or decrease the thermal efficiency depending on the specific conditions

Answer

It decreases the thermal efficiency

Question 7

What is regenerated Brayton cycle?

Accepted Answer

A Brayton cycle that incorporates a heat exchanger to recover energy from the exhaust gases

Answer

A Brayton cycle that uses renewable energy sources

Answer

A Brayton cycle where heat is added in the compressor

Answer

A Brayton cycle that includes an additional combustion stage

Question 8

What type of cycle is a Brayton cycle?

Accepted Answer

Thermodynamic cycle

Answer

Chemical cycle

Answer

Geological cycle

Answer

Biological cycle

Question 9

What is the primary working fluid used in a gas turbine Brayton cycle?

Accepted Answer

Air

Answer

Carbon dioxide

Answer

Water

Answer

Hydrogen

Question 10

Why is high compression ratio desirable in an aircraft gas turbine engine?

Accepted Answer

To improve engine efficiency

Answer

To increase engine noise

Answer

To reduce engine power

Answer

To decrease fuel consumption

Question 11

What is the purpose of the compressor in an aircraft gas turbine engine?

Accepted Answer

To increase the pressure of the incoming air

Answer

To ignite the fuel-air mixture

Answer

To generate electricity

Answer

To cool down the exhaust gases

Question 12

What is the purpose of the turbine in an aircraft gas turbine engine?

Accepted Answer

To extract energy from the hot exhaust gases

Answer

To produce electrical power

Answer

To filter the incoming air

Answer

To cool down the compressed air

Question 13

What is the function of the combustion chamber in an aircraft gas turbine engine?

Accepted Answer

To burn fuel and generate high-pressure gases

Answer

To filter the incoming air

Answer

To cool down the compressor

Answer

To extract energy from the exhaust gases

Question 14

How does the compression ratio affect the efficiency of an aircraft gas turbine engine?

Accepted Answer

Higher compression ratios increase the efficiency

Answer

Compression ratios have no effect on the efficiency

Answer

Higher compression ratios decrease the efficiency

Answer

Compression ratios only affect the engine's noise level

Question 15

In terms of process, where does the compression of air mainly occur in an aircraft gas turbine engine?

Accepted Answer

In the compressor

Answer

In the intake

Answer

In the turbine

Answer

In the combustion chamber

Question 16

What is the purpose of the diffuser in an aircraft gas turbine engine?

Accepted Answer

To slow down and increase the pressure of the incoming air

Answer

To cool down the exhaust gases

Answer

To ignite the fuel-air mixture

Answer

To filter the incoming air

Question 17

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

Accepted Answer

To guide and direct airflow through the compressor

Answer

To extract energy from the hot exhaust gases

Answer

To ignite the fuel-air mixture

Answer

To cool down the exhaust gases

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