Definitions
Measure of electromotive force (pressure)
What is the Voltage of the C172S Electrical System?
28
How many batteries does the C172 have?
2
What is an Amp?
Measure of electrimotive current (Rate of flow)
What is the Amperage Output of the Alternator in the C172S?
60
What is one of the airplane systems reliant on the electrical system?
Lights, flaps, fuel pump, avionics
What is a Bus?
Used to tie together electrical components onto the same module
What is the purpose of the ACU?
Keeps the alternator at 28V
How many minutes of power will the standby battery provide?
What does ACU stand for?
Alternator Control Unit
How many Buses makeup the electrical system?
6
What do the M and S under the ammeter represent?
Main and Standby Batteries
What is a Relay?
Opens or close switch electronically
Name the 6 buses that are part of the electrical system
Avionics #1
Avionics #2
Main #1
Main #2
Essential
Crossfeed
When does the LOW VOLTS annunciator appear
The Main or Essential bus is below 24.5 volts