AC Power Flashcards
1
Q
If the aircraft ac generators are online and ground ac power is applied what will happen?
A
The aircraft supplies will take priority.
2
Q
What is the purpose of the AC Load shedding relay?
A
To connect and disconnect busbar 2A for load shedding purposes.
3
Q
Which system is supplied by the 26v AC transformers?
A
Altitude and heading reference system (AHRS).
4
Q
At what stage to the AC Generator control units (GCU’s) bring the generators online?
A
92% Np (370Hz)
5
Q
Where are the alternating current generators located?
A
On a step up gearbox on the accessory gear box.
6
Q
What Np does the AC generators come online at?
A
92%
7
Q
If you have an AC external power caution what does it mean?
A
The starter master is on.
8
Q
What Np do the frequency detect relay de-energise?
A
92% NP (370Hz)
