Podcast
Questions and Answers
What is the source of power supplied to the essential AC and DC buses?
What is the source of power supplied to the essential AC and DC buses?
- DC generator
- AC generator
- Three-phase 115-V AC at 400 Hz (correct)
- Battery
In the event of power loss to the essential AC and DC main busbars, how is power supplied to the DC essential bus and AC ESS BUS?
In the event of power loss to the essential AC and DC main busbars, how is power supplied to the DC essential bus and AC ESS BUS?
- By the battery via the static inverter and emergency bus supply contactor (correct)
- By the DC ESS shed bus contactor
- By the AC ESS shed bus contactor
- By the voltage regulator
What isolates the AC ESS bus shed network in the battery-only configuration?
What isolates the AC ESS bus shed network in the battery-only configuration?
- DC generator
- Emergency bus supply contactor (correct)
- AC generator
- Three-phase 115-V AC at 400 Hz
What adjusts the field current in generators or alternators to maintain the required output voltage?
What adjusts the field current in generators or alternators to maintain the required output voltage?
When are the AC ESS shed bus and DC ESS shed bus shed respectively?
When are the AC ESS shed bus and DC ESS shed bus shed respectively?
How is the battery connected to supply power to the AC ESS BUS and DC essential bus?
How is the battery connected to supply power to the AC ESS BUS and DC essential bus?
What does the disconnect mechanism do in the event of a transmission malfunction?
What does the disconnect mechanism do in the event of a transmission malfunction?
How is reset accomplished for the disconnect mechanism with the engine stationary?
How is reset accomplished for the disconnect mechanism with the engine stationary?
What is the main cooling agent used in newer AC generators?
What is the main cooling agent used in newer AC generators?
What is forced through older and/or less powerful generators as a cooling means?
What is forced through older and/or less powerful generators as a cooling means?
What happens when the driving dogs on the two shafts are separated?
What happens when the driving dogs on the two shafts are separated?
Which component sends oil through both the generator and an air/oil heat exchanger for cooling?
Which component sends oil through both the generator and an air/oil heat exchanger for cooling?
What is the purpose of the battery temperature monitor system in aircraft with Ni-cad batteries?
What is the purpose of the battery temperature monitor system in aircraft with Ni-cad batteries?
How many temperature sensors (thermistors) are present in each battery?
How many temperature sensors (thermistors) are present in each battery?
Where are the two independent temperature sensors (thermistors) mounted within the battery?
Where are the two independent temperature sensors (thermistors) mounted within the battery?
Why is adequate ventilation necessary for lead-acid batteries?
Why is adequate ventilation necessary for lead-acid batteries?
How can a positive airflow ventilation system be created for the battery compartment?
How can a positive airflow ventilation system be created for the battery compartment?
What is the purpose of using a pick-up and outflow pipe through the aircraft's skin in relation to battery ventilation?
What is the purpose of using a pick-up and outflow pipe through the aircraft's skin in relation to battery ventilation?
What happens to the terminal voltage of the generator as it comes up to speed?
What happens to the terminal voltage of the generator as it comes up to speed?
When contact points C1 are separated, where does the field current flow through?
When contact points C1 are separated, where does the field current flow through?
What effect does adding resistance to the field circuit have on the generator?
What effect does adding resistance to the field circuit have on the generator?
Why is L2 winding opposed to the L1 winding in the generator?
Why is L2 winding opposed to the L1 winding in the generator?
What is the purpose of the vibrator-type current limiter in the generator system?
What is the purpose of the vibrator-type current limiter in the generator system?
Where is L3 located in relation to the main line and load in the generator system?
Where is L3 located in relation to the main line and load in the generator system?
What is the reason vibrating-type regulators and three-unit regulators cannot be used with generators requiring high field current?
What is the reason vibrating-type regulators and three-unit regulators cannot be used with generators requiring high field current?
Why do heavy-duty generator systems require a different type of regulator, such as the carbon-pile voltage regulator?
Why do heavy-duty generator systems require a different type of regulator, such as the carbon-pile voltage regulator?
What feature distinguishes a compound-wound generator from other types of generators?
What feature distinguishes a compound-wound generator from other types of generators?
What is the purpose of the radially arranged leaf springs in a carbon-pile voltage regulator?
What is the purpose of the radially arranged leaf springs in a carbon-pile voltage regulator?
In older aircraft DC generating systems, which type of regulator would typically be used?
In older aircraft DC generating systems, which type of regulator would typically be used?
Why is a carbon pile named as such in the carbon-pile voltage regulator?
Why is a carbon pile named as such in the carbon-pile voltage regulator?
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