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Questions and Answers
What is the purpose of disconnecting the CSD from the generator system?
What is the purpose of disconnecting the CSD from the generator system?
- To prevent further damage to the generator system (correct)
- To switch it manually from the aircraft's flight deck
- To control the rotational speed of the generator
- To allow the CSD to be reconnected on the ground
How is the CSD disconnect activated?
How is the CSD disconnect activated?
- Through the differential and variable displacement hydraulic units
- Automatically by a generator control unit (correct)
- By a spring-biased flyweight-operated hydraulic valve
- By a mechanical control governing the rotational speed
What enables the rotational speed of the alternating current generator to be governed?
What enables the rotational speed of the alternating current generator to be governed?
- Control pressure in the transmission charge oil
- Generator control valve
- Fixed displacement hydraulic units
- Differential and variable displacement hydraulic units (correct)
In the governing section of the CSD, what is the function of the governor?
In the governing section of the CSD, what is the function of the governor?
What is the consequence of the CSD being disconnected from the generator system?
What is the consequence of the CSD being disconnected from the generator system?
How is the power used to drive the alternating current generator controlled and transmitted?
How is the power used to drive the alternating current generator controlled and transmitted?
What is the purpose of grounding in an aircraft electrical system?
What is the purpose of grounding in an aircraft electrical system?
Why is a two-wire electrical system necessary in aircraft built with composite materials?
Why is a two-wire electrical system necessary in aircraft built with composite materials?
What happens when the master switch in an aircraft is closed?
What happens when the master switch in an aircraft is closed?
What is the function of a battery solenoid in an aircraft's electrical system?
What is the function of a battery solenoid in an aircraft's electrical system?
Why is a negative-ground, single wire system used in most aircraft?
Why is a negative-ground, single wire system used in most aircraft?
What is the main difference between composite material-built aircraft and metallic structure-built aircraft in terms of electrical system design?
What is the main difference between composite material-built aircraft and metallic structure-built aircraft in terms of electrical system design?
What is the frequency of the AC produced by the generators in a modern aircraft like a 787?
What is the frequency of the AC produced by the generators in a modern aircraft like a 787?
How many secondary windings does the transformer in the aircraft have?
How many secondary windings does the transformer in the aircraft have?
What component enables the reading of amps at auxiliary terminals?
What component enables the reading of amps at auxiliary terminals?
What is the purpose of the thermal switch in the aircraft's system?
What is the purpose of the thermal switch in the aircraft's system?
How many silicon diodes are connected in parallel in each bridge rectifier assembly?
How many silicon diodes are connected in parallel in each bridge rectifier assembly?
What is the DC ripple frequency produced from the parallel rectified outputs of the two secondary windings?
What is the DC ripple frequency produced from the parallel rectified outputs of the two secondary windings?
What is the purpose of winding L4 in the generator system?
What is the purpose of winding L4 in the generator system?
Why is contact C3 kept open when the generator is not operating?
Why is contact C3 kept open when the generator is not operating?
What happens when the voltage of the generator is more than the normal voltage of the battery?
What happens when the voltage of the generator is more than the normal voltage of the battery?
Why does the charging current passing through L4 help hold the contacts tightly closed?
Why does the charging current passing through L4 help hold the contacts tightly closed?
What role does coil spring S3 play in the system?
What role does coil spring S3 play in the system?
How does a decrease in generator voltage affect contact C3?
How does a decrease in generator voltage affect contact C3?
What happens when the second aircraft engine is started and the generator is operating within system limits?
What happens when the second aircraft engine is started and the generator is operating within system limits?
What happens if one of the generators becomes inoperative?
What happens if one of the generators becomes inoperative?
How are the AC non-essential loads and TRUs powered?
How are the AC non-essential loads and TRUs powered?
What happens to the BTB when both AC generators are operating within system tolerance?
What happens to the BTB when both AC generators are operating within system tolerance?
Which buses are separated from each other for redundancy following power malfunctions?
Which buses are separated from each other for redundancy following power malfunctions?
What causes external power to be removed from the aircraft's system loads?
What causes external power to be removed from the aircraft's system loads?
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