19 Flashcards
Electrical systems are used for heating pitot and static probes and ports. What kind of electrical redundancy feature is normally found in such system?
They are powered from the emergency electrical buses
What is the function of a suppressor?
It screens out interference
In a torque synchro of an auto pilot system, current will flow between the transmitter and receiver stators when the rotors are:
Out of alignment
What jet pipe temperature probe would be found in a turbo prop as opposed to a turbo fan?
Rapid response probe
One purpose of a comparator system is:
Compare referenced information with displayed information
A power failure to a CRT will be indicated by:
A blank screen
In relation to FMS, a “blended position” is the result of a comparison of output from the primary navigation reference with:
Outputs from the other navigation sensors
What is the purpose of a transformer?
To change from on AC voltage to another AC voltage
What would be the full hydroplaning speed of a 130 tonne aircraft with tyre pressures of 145psi?
108 kts
The purpose of the flux valve in a gyro-stabilised heading reference system is to:
Sense the A/C’s heading relative to the earth’s magnetic field
What is the reason for the fuel heater in an engine fuel system?
To ensure that the fuel is free of ice crystals
With regard to the temperature of the gas flow in the turbine section: EGT
EGT is the temperature at turbine exit
Most landing gear systems in transport a/c have uplocks which are normally released by a hydraulic actuator to permit gear extension. How then is the gear extended in the event of a
total hydraulic system failure?
By an electrical motor or cables which trip the locking mechanism for each gear
With respect to GPWS, which of the following statements is correct?
Windshear warnings take priority over all other modes
In relation to autopilots, what is meant by the term, ‘coupling’?
It means that the autopilot is connected to one or more specific sensors to maintain specific parameters