Electrical power? Flashcards
1
Q
What are the two types of electricity used by a 747v
A
AC + DC
2
Q
The three main parts of an electrical system?
A
AC power, DC power, standby power
3
Q
What are the sources of AC power during flight?
A
IDG
4
Q
What are the AC power sources when on the ground?
A
Two APU generators, 2 external power ports
5
Q
How many main AC buses are there?
A
4
6
Q
What does a TRU do/stand for?
A
Convert AC to DC. Transformer rectifier unit
7
Q
What frequency does a 747 use?
A
400hz
8
Q
What voltage does AC run at?
A
115v
