unit 3 Flashcards
What is the term for the process of producing voltage in a conductor when it passes through a magnetic field?
Electromagnetic induction
The difference between DC and AC is that DC
has a constant polarity; AC changes direction at regular intervals
On a simple AC generator, which item takes the current from the slip rings to operate the electrical device?
Brushes
Which part of a generator acts as an automatic switching device, changing alternating current to direct current?
Commutator
One function of the CSD governor system is to
equalize the load between generators operating in parallel
Which component ensures the CSD output speed is always at the desired RPM to adjust and maintain the desired 400 Hz?
Frequency and load controller
What provides the PTO shaft that is used to drive the CSD?
Engine adapter
How are the thermocouples connected in an averaging type of EGT circuit?
Parallel
The slide-type resistor in the EGT circuit is used to….
calibrate the EGT indicator in the flight station
What is the primary input power to the main ignition system?
28VDC
How many sets of imbedded magnets does the rotor contain?
3
What does the EGT/T5.6 thermocouples consist of
both alumel and chromel
Which unit of AC ignition system develops 20,000 volts?
Transformer
A simple DC ignition system consist of vibrator,
ignition plugs, and transformer
How many independent circuits are within an F100-PW-100 engine ignition system?
3
An F100-PW-100 engine augmentor igniter plugs ionizes at a minimum rate of how many sparks per second?
30
Which statement best describes the air turbine (impingement) starter?
Has the advantages of less weight and fewer moving parts than other starters
The two air source requirements for a pneumatic starter to operate properly are sufficient
volume and pressure
The JFS is basically a
small gas turbine engine
Which item initially rotates the JFS?
Hydraulic motor
Which type of combustion chamber does the JFS use
Annular
What engine section houses the JFS combustion section?
Turbine plenum
Which item on the JFS provides pads for mounting the fuel atomizer assembly?
Turbine plenum
The F-15 secondary power system does not include the
CSD
Which component provides an electrical safety cutoff for the JFS if the power turbine accelerates to a 110 percent overspeed condition?
Power turbine overspeed switch
On the F-15 secondary power system CGB, how are the isolation decouplers extended?
Hydraulically
Oil is supplied to the F-15 JFS through the
CGB oil system
On an F-15, the power to start the engines begins with the JFS and continues through the CGB to the
AMAD
On the F-15 secondary power system, what is used to stop the JFS starting cycle when the aircraft engine has accelerated to starter cutout speed?
50 percent engine cutout switch assembly
