Home
Browse
Create
Search
Log in
Sign up
Upgrade to remove ads
Only $2.99/month
Electrical System
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (17)
Generator
Which component converts mechanical energy to electrical energy?
Battery
Which component converts stored chemical energy to electrical energy?
28.5
When operated by the generators, how many VDC (Volts DC) does the electrical power supply system supply to the airborne electrical system?
Starter / Generator
Which component recharges the battery when the engines are running?
[a] supply
[b] distribution
[c] consumers
What are the three main sub-systems of the Electrical System?
Electrical power [a] system.
Electrical power [b] system.
Electrical power [c]
23.5
An External Power Unit (EPU) is used for engine start if battery power is less than __________ VDC.
No action required (It's normal during engine start)
During engine start, if the BAT DISCH caution illuminates on the CAD, what corrective action is required?
23.5
The minimum power required to start the UH-72A is [a] Volts?
Standby Horizon
A separate power module (battery) supplies 24 VDC as emergency power for the emergency lighting system and the [a] .
30 seconds
To prevent the starter from overheating when using the battery to start the engine, limit starter to [a] seconds of activation.
Generators / Starters
External Power Units
Batteries
Which components supply electrical power to the UH-72?
[a] Main Bus 1
[b] Main Bus 2
Momentarily placing the BAT MSTR switch to the ENGAGE position connects the battery to the [a] and [b].
40%
On engine start, the ENG START switch disengages at 40% N1, and the generator is automatically connected to the electrical system when N1 is > ______%?
Shed Bus
In the event of a dual generator failure both the Non-essential and Shed Buses are disconnected from the electrical system. Which of these can be reconnected to electrical power from the battery using an overhead switch?
Voltage Regulation
What is the primary function of the GCU (Generator Control Unit)?
40%
The starter-generator automatically transition from start mode to generator mode when the generator exceeds [a]% N1 speed?
24V
When operated by the battery, how many VDC (Volts DC) does the electrical power supply system supply to the airborne electrical system?
THIS SET IS OFTEN IN FOLDERS WITH...
Avionics
21 terms
Lifting System
27 terms
Fuel Systems
12 terms
Power Plant
32 terms
YOU MIGHT ALSO LIKE...
UH-72 Electrical System
14 terms
Electrical System
49 terms
ERJ 175 Electrical SkyWest
25 terms
3.2 Power Supplies
9 terms
OTHER SETS BY THIS CREATOR
UH 60M EP (2JAN19)
43 terms
Hydraulics and flight instruments
7 terms
Practice General Discussion
74 terms
Ultimate List
355 terms