#1
Which component is responsible for compressing incoming air in a gas turbine engine?
Compressor
ExplanationCompressor compresses incoming air to increase pressure before combustion.
#2
What is the purpose of the combustor in a gas turbine engine?
To mix fuel with compressed air and ignite the mixture
ExplanationCombustor mixes fuel with compressed air, ignites it to produce high-temperature exhaust.
#3
Which component of a gas turbine engine is responsible for converting thermal energy into mechanical energy?
Turbine
ExplanationTurbine converts high-temperature exhaust's thermal energy into mechanical energy.
#4
In a jet engine, what is the primary function of the turbine?
To extract energy from the high-velocity exhaust gases
ExplanationTurbine extracts energy from fast-moving exhaust gases, converting it to mechanical energy.
#5
What is the purpose of the nozzle in a jet engine?
To regulate the speed and direction of exhaust gases
ExplanationNozzle controls the speed and direction of the high-velocity exhaust gases.
#6
What is the purpose of a variable stator in a gas turbine engine compressor?
To control the airflow by adjusting the angle of the blades
ExplanationVariable stator adjusts blade angles, optimizing airflow and compression in the compressor.
#7
In a turboprop engine, what is the function of the reduction gearbox?
To reduce the speed of the turbine for driving the propeller
ExplanationReduction gearbox decreases turbine speed to drive the propeller at an efficient speed.
#8
What is the function of the afterburner in a jet engine?
To increase thrust by burning additional fuel in the exhaust stream
ExplanationAfterburner enhances thrust by injecting and burning additional fuel in the exhaust.
#9
Which term describes the phenomenon where the compressor stalls in a gas turbine engine?
Surge
ExplanationCompressor surge is the phenomenon of stall, causing a disruption in airflow.
#10
Which type of turbine engine is commonly used in commercial airliners?
Turbofan
ExplanationTurbofan engines are commonly used in commercial airliners for efficiency and lower noise levels.
#11
What is the primary advantage of a geared turbofan engine over a traditional turbofan engine?
Increased fuel efficiency
ExplanationGeared turbofan engines enhance fuel efficiency by optimizing the fan and turbine speeds.
#12
What is the purpose of the afterburner in a jet engine?
To increase thrust by burning additional fuel in the exhaust stream
ExplanationAfterburner boosts thrust by injecting and burning extra fuel in the exhaust.
#13
What is the primary purpose of the thrust reverser in an aircraft engine?
To redirect thrust forward to assist in braking after landing
ExplanationThrust reverser redirects thrust forward to aid in braking after landing.
#14
In a turbojet engine, where is the majority of thrust generated?
Nozzle
ExplanationMajority of thrust in a turbojet engine is generated at the nozzle.
#15
What is the purpose of a variable-area nozzle in a jet engine?
To control the exit area and optimize thrust at different speeds
ExplanationVariable-area nozzle adjusts exit area, optimizing thrust at various speeds.