AFT FINAL REVISION TESTS Flashcards
A function of a pressure relief valve in a transport category jet hydraulic system is -
a. to regulate normal system pressure
b. to prevent hydraulic seals from blowing out
c. to prevent hydraulic lock
d. to prevent jack stall
b. to prevent hydraulic seals from blowing out.
The function of the rear turbine support struts in the exhaust system of a turbojet engine is -
a. to reduce axial velocity in the jet pipe
b. to support the propelling nozzle
c. to straighten the airflow in the jet pipe
d. to increase the surface area of the exhaust cone
c. to straighten the airflow in the jet pipe
In a gas turbine engine the start bleed valve is open at idle RPM. The RPM is then increased to maximum with the bleed valve still open.
Regarding this situation -
a. this is the normal situation and would result in maximum thrust
b. the EGT will be higher that normal with reduced thrust output
c. the EGT will be lower than normal with reduced thrust output
d. the EGT will be lower than normal with increased thrust output
e. the EGT will be higher than normal with increased thrust output
b. the EGT will be higher that normal with reduced thrust output
The nozzle guide vanes (NGVs) in a gas turbine are located -
a. at the compressor inlet
b. at the compressor outlet
c. at the turbine inlet
d. at the turbine outlet
c. at the turbine inlet
Regarding the gas flow in the combustion section of a GTE -
a. pressure and temperature increase
b. pressure and temperature decrease
c. pressure is constant and temperature increases
d. pressure increases and temperature remains constant
c. pressure is constant and temperature increases
Concerning the characteristics of the airflow behind a normal (vertical) shockwave -
a. pressure and temperature increase
b. pressure and temperature decrease
c. pressure is constant and temperature increases
d. pressure increases and temperature remains constant
a. pressure and temperature increase
The hot gas in a jet aircraft APU for bleed air supply is taken from -
a. the compressor outlet
b. the compressor inlet
c. the combustion section
d. the exhaust section
a. the compressor outlet
The effect of CoG position on the cruise speed of an aircraft for a given power setting and weight in level flight is -
a. no effect regardless of trim position
b. a forward CoG results in a higher cruise speed
c. a rearward CoG results in a higher cruise speed
d. no effect if trimmed correctly
c. a rearward CoG results in a higher cruise speed
A constant supply of fluid from the reservoir in a jet aircraft hydraulic system is ensured by -
a. backup air driven demand pumps
b. constant delivery type pumps
c. venting the reservoir to the ambient atmosphere
d. pressurizing the reservoir with bleed air
d. pressurizing the reservoir with bleed air
On a turbojet powered aircraft the front engine pressure ratio (EPR) probes are blocked.
As the pilot advances the thrust levers to take off EPR, the EPR gauge will -
a. under read and the thrust will be less than takeoff thrust
b. over read and the thrust will be less than takeoff thrust
c. under read and the thrust will be more than takeoff thrust
d. over read and the thrust will be more than takeoff thrust
b. over read and the thrust will be less than takeoff thrust
As an aircraft altitude increases, the spiral stability will -
a. increase
b. decrease
c. not change
d. increase if IAS is increased but decrease if IAS is decreased
a. increase
In a GTE powered aircraft, less thrust is available for takeoff with -
a. high density altitude
b. low density altitude
c. high atmospheric pressure
d. low outside air temperature
a. high density altitude
In a gas turbine, engine thrust is produced -
a. by the force required to accelerate the mass of air through the engine
b. by the reaction to the impingement of exhaust gases against the outside air
c. by the reaction of the pressure difference between inlet and exhaust gases
d. by the energy of the temperature difference between inlet and exhaust gases
a. by the force required to accelerate the mass of air through the engine
In passing through the turbine section of a GTE the airflow -
a. temperature and pressure decrease
b. temperature and pressure increase
c. temperature and volume decrease
d. temperature and volume increase
a. temperature and pressure decrease
The maximum gas temperature in a GTE occurs -
a. in the combustion chamber dilution zone
b. in the combustion chamber primary zone
c. at the combustion chamber outlet
d. at the combustion chamber inlet
e. at the turbine entry
b. in the combustion chamber primary zone
The purpose of a divergent shaped inlet duct on a turbofan engine is to -
a. reduce the temperature at the engine inlet
b. increase the velocity at the engine inlet
c. increase static pressure at the engine inlet
d. increase the by-pass ratio at low forward speed
c. increase static pressure at the engine inlet
The greatest reduction in takeoff distance of a GTE powered aircraft would occur with -
a. low OAT, low QNH and low humidity
b. high OAT, high QNH and high humidity
c. high OAT, low QNH and low humidity
d. low OAT, high QNH and low humidity
e. low OAT, low QNH and high humidity
d. low OAT, high QNH and low humidity
The bypass ratio of a GTE is best described as -
a. the ratio of bypass air to total air
b. the ratio of total air to bypass air
c. the ratio of core air to bypass air
d. the ratio of bypass air to core air
d. the ratio of bypass air to core air
The least significant tyre variable relating to hydroplaning is -
a. tread pattern
b. wear
c. pressure
d. size
d. size
An advantage of nickel cadmium (NiCad) batteries compared to lead acid type batteries in a jet transport aircraft installation is -
a. less corrosion hazard
b. faster recharge
c. higher load capacity
d. no ventilation required
b. faster recharge
The electrical connection of ground AC power to the electrical system of a jet transport aircraft may be prevented when -
a. the aircraft APU is running
b. the aircraft engines are running
c. the aircraft generators are powering the electrical system
d. the aircraft is not correctly earthed
c. the aircraft generators are powering the electrical system
If an aircraft generator constant speed drive (CSD) is disconnected in flight, the correct method for reconnection is -
a. electrically, inflight
b. mechanically, on the ground
c. electrically, on the ground
d. mechanically, inflight
b. mechanically, on the ground
When a generator field relay (generator field switch) is tripped in a jet aircraft electrical system -
a. the generator is disconnected from the CSD
b. the generator excitation field is disconnected from the synchronizing bus
c. the voltage regulator is disconnected from the excitation field
d. the generator excitation field is disconnected from its bus
e. the frequency controller is disconnected from the excitation field
c. the voltage regulator is disconnected from the excitation field
The initial source of field excitation current for a 3 phase alternator in a jet transport aircraft electrical system is -
a. the main exciter
b. the main generator
c. the permanent magnet generator (PMG)
d. the voltage regulator
c. the permanent magnet generator (PMG)