EASA Gas Turbine Engine Practice Test

These questions are part of the practice quiz. Start practicing

• In a turboprop engine, the total dynamic power delivered to the propeller is best described as
• Power is adjusted in a gas turbine engine by
• Thrust rating on an FADEC controlled engine can be changed by.
• In the turbine, as flow velocity increases due to the convergent blade geometry, temperature does what?
• What effect does high atmospheric humidity have on the operation of a jet engine?
• The RPM for maximum power would be lower under which temperature condition?
• At what stage in a gas turbine engine are gas pressures the greatest?
• In the turbine rotor blade region, which statement describes the change?
• Ram effect in aviation refers to
• Ram effect is the conversion of kinetic energy to which energy form at the face of the compressor?
• Thrust will
• In a dual axial flow or twin-spool compressor system with a free power turbine, Nf would indicate the speed of which component?
• Which component is primarily responsible for increasing the energy of the mass airflow prior to the burner?
• Which compressor type gives the greatest advantages for both starting flexibility and improved high altitude performance?
• ESHP stands for
• The accessory gearbox of a high bypass engine is located where?
• The basic equation for thrust is
• For starting flexibility and high altitude performance, which compressor configuration is considered most advantageous?
• The main factor considered when designing an engine is
• With the throttle fixed, what happens to RPM and TGT when ambient temperature increases?
• Which law relates to the kinetic, pressure, and potential energy in a fluid flow?
• The highest heat to metal contact in a jet engine is the.
• Which statement describes the thrust mechanism of a jet engine?
• On a triple spool engine, the first stage of turbines drives
• Ram Recovery is a measure of which parameter?
• Newton's First Law of Motion, generally termed the Law of Inertia, states:
• As the air is passed through the turbine, due to the convergent shape formed between adjacent blades.
• The velocity of subsonic air in a convergent nozzle typically does which?
• The 'core engine' or 'gas generator' is made up of the following components.
• Which statement is true regarding the burner’s effect on temperature?
• The term Pt7 means what?
• Some turboprop and turbojet engines are equipped with two spool or split compressors. When operated at high altitudes, the
• With fixed throttle and increasing altitude, the fan RPM will:
• Which statement is true about the high bypass ratio turbofan according to the provided material?
• Propulsive efficiency is highest when which condition applies?
• The density of gas may be expressed as weight per unit volume. Which option represents this relation more precisely?
• A turboprop engine derives its thrust by which mechanism?
• If the LP shaft shears, which event occurs?
• Which sequence correctly describes the order of engine stations from inlet to exhaust?
• When a volume of air is compressed, which statement is correct according to ideal gas behavior used in this context?
• In gas turbine terminology, the symbol Pb refers to burner pressure measured at which location?
• Which component increases the static pressure of the air at the inlet to the compressor?
• Which statements are true regarding aircraft engine propulsion?
• In a twin-spool engine, N1 denotes the speed of which component?
• Where is the highest pressure location in a gas turbine located according to the material?
• Gas turbine efficiency is most favorable under which ambient temperature condition?
• In a choked nozzle, velocity increases, and which of the following also changes according to the data?
• At constant RPM, the compressor pressure ratio and the temperature rise across the compressor do what as height increases?
• Adiabatic compression is which of the following?
• Among compressor inlet temperature, burner can pressure, and turbine inlet temperature, which is the ultimate limiting factor for turbine engine operation?
• Lower ambient temperature has what effect on mass flow and thrust?
• Which statement about compressor speed changes with ambient temperature is true?
• How does engine thrust vary with ambient temperature?
• Newton's First Law is summarized as
• Flat rated thrust is defined as
• In a free turbine arrangement, the compressor is not mechanically connected to the turbine.
• Which condition yields the highest propulsive efficiency?
• Which statement is false regarding the mass airflow temperature profile?
• Propeller torque is analogous to.
• Full reverse power is approximately.
• Which expression represents the basic thrust equation cited?
• To maintain the selected RPM of a gas turbine at altitude,
• The hottest component in a gas turbine engine is
• A divergent duct will cause subsonic flow to decrease in velocity and increase in static pressure. Which description matches this behavior?
• Bernoulli's Theorem states that at any point in a flow of gas.
• The temperature trend of mass airflow from inlet to exhaust is described as:
• If altitude increases with fixed throttle, which statement best describes the fan RPM?
• The pressure of supersonic air as it flows through a divergent nozzle.
• Which statement correctly summarizes Newton's First Law (Law of Inertia)?
• A modular constructed gas turbine engine means that which statement is true?
• The Brayton cycle is
• As subsonic air flows through a convergent nozzle the velocity
• With a fixed throttle in a climb, what happens to RPM?
• In an axial flow, dual compressor forward fan engine, the fan turns at the same speed as which component?
• Which of the following variables affect the inlet air density of a turbine engine?
• Ram pressure recovery will generally take effect at aircraft speeds of
• In a dive, with the throttles fixed, the EPR will.
• Boyle's law states that, at constant temperature, if a gas is compressed.
• Ram pressure recovery generally takes effect at speeds around Mach numbers?
• Which statement correctly describes the engine rating plug?
• The efficiency of a gas turbine would be greatest at.
• At higher than standard day ambient temperatures, compressor speed will be?
• Which component experiences the highest temperature in the described mass airflow path?
• At constant RPM, how does compressor temperature rise behave with altitude?
• Which engine category is most likely to have a noise suppression unit installed?
• Which statement about fuel mixing and burning is correct based on the engine sections?
• The efficiency of a gas turbine engine at altitude
• Which statement about the Brayton cycle correctly characterizes its name?
• The total power in a turboprop engine is the.
• Which of the following might be used to identify turbine discharge pressure?
• If the throttle position remains constant, what happens when ambient temperature increases?
• Ram Recovery is a measure of which parameter?
• The diffuser section is located between which sections?
• A modular constructed gas turbine engine means that its major components can be removed and replaced without disturbing the rest. This statement is:
• If a volume of a mass of air is 546 cubic feet at 273K, at 274K it will be.
• A high bypass engine results in which of the following?
• In a twin spool compressor system, which compressor is driven by the first stage turbine?
• Using standard atmospheric conditions, the standard sea level temperature is which of the following?
• With the aircraft stationary, how does propulsive efficiency behave?
• Which component primarily limits exhaust gas temperature (EGT) in a gas turbine engine?
• In a triple spool engine, the HP compressor is driven by the first stage of turbines.
• If an aircraft climbs with a fixed throttle position, what happens to thrust and RPM?
• Where do the highest gas pressures occur in an axial flow turbojet engine?
• Thrust statements indicate which of the following?
• A turbojet engine is smoother running than a piston engine primarily because.
• The Brayton cycle is known as the constant
• Which of the following is the ultimate limiting factor of turbine engine operation?
• The highest pressure location in a gas turbine is which of the following?
• Nf is an indication of the speed of which component in a dual axial flow system with a free power turbine?
• Ram effect due to aircraft forward speed will cause the efficiency of the engine to
• The pressure of subsonic air as it flows through a convergent nozzle does what?
• In the turbine section, how do velocity and pressure change?
• As aircraft speed increases, ram effect tends to
• Which unit is generally used to measure aircraft noise?
• Most likely parameter limiting the height at which a jet engine powered aircraft can operate would be insufficient?
• The cold section of a gas turbine engine includes which of the following components?
• Which statement is true regarding jet engines?
• The efficiency of conversion of kinetic energy into propulsive work is a measure of
• In a choked nozzle, velocity increases, and which of the following also changes according to the data?
• Which of the following is not a standard jet engine rating?
• Bernoulli's theorem states that at any point in a flow of gas
• As altitude increases with fixed throttle for a high by-pass engine, the fan RPM will:
• Ram effect due to forward speed will cause engine efficiency to
• Which engine component experiences the highest heat transfer to metal during operation?
• In a ducted fan engine, the fan is driven by which component?
• In high altitude operation, the low pressure rotor will increase its speed when the compressor load decreases in the lower density air.
• A gas turbine engine comprises which three main sections?
• Inlet air density is determined by which pair of variables?
• To ensure an engine maintains self sustaining speed.
• With increasing ram effect.
• Which statement best describes the order of engine stations in the mass airflow path?
• Which of the following is not a standard jet engine rating?
• Which law or cycle is characteristic of the operation of a gas turbine engine as described in the material?
• Turbine discharge pressure identification is associated with which pressure tap?
• Standard sea level pressure is which of the following?
• Which day condition lowers the RPM for maximum power?
• The principle of jet propulsion is.
• The turbine rotor blade pressure change is best described by which statement?
• With a fixed throttle, and with increased mass airflow, what happens to EPR?
• A turbo jet engine provides thrust by which of the following mechanisms?
• In the Brayton cycle, the heat addition process occurs at
• At altitude, idling RPM is.
• Which statement describes the temperature profile of the mass airflow as it passes through the engine?
• The diffuser is primarily used to increase the static pressure of the air entering the system.
• The velocity of subsonic air as it flows through a convergent nozzle does which of the following?
• Across the turbines, there is
• In what section of a turbojet engine is the jet nozzle located?
• A method of comparing engine efficiencies is by comparing
• Ram effect due to aircraft forward speed will cause the engine thrust to
• Which value corresponds to the standard sea level temperature in Fahrenheit, based on the given data?
• Increasing ram effect with increased speed.
• What part of a jet engine has the most potential energy?
• Which item is not part of the core engine or gas generator?
• The EPR transmitter is used to provide signal to
• A waisted drive shaft is primarily to
• Which component is hottest in a gas turbine engine?
• Which metric is used to compare engine efficiency in terms of fuel usage?
• A jet engine derives its thrust by
• As air density changes the RPM of a gas turbine engine will change. How is RPM kept at a constant speed?
• The Brayton cycle is known as the constant.
• The symbol for designating the speed of a LP compressor in a twin spool engine is.
• Ram effect is the conversion of kinetic energy to which energy form at the face of the compressor?
• Through turbine rotor blades, the pressure changes as described. Which statement is correct?
• The working fluid of a gas turbine engine is
• What section provides proper mixing of the fuel and efficient burning of the gases?
• Varying the EPR datum plug will primarily affect
• The purpose of a diffuser is to
• In a gas turbine engine, the fan is driven by which turbine?
• Of the following, which engine type would most likely have a noise suppression unit installed?
• Bernoulli's theorem indicates energy conservation along a streamline.
• With an increase in forward speed, the engine thrust.
• Pt7 denotes which quantity?
• The gas turbine engine uses which working fluid?
• If a gas is compressed at constant temperature and its volume halves, the pressure will
• In a free turbine arrangement, the compressor is not mechanically connected to the turbine.
• Temperature of the mass airflow through a Gas Turbine Engine: which statement is correct?