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Terms in this set (17)
Which component converts mechanical energy to electrical energy?
Which component converts stored chemical energy to electrical energy?
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?
What are the three main sub-systems of the Electrical System?
Electrical power [a] system.
Electrical power [b] system.
Electrical power [c]
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?
The minimum power required to start the UH-72A is [a] Volts?
A separate power module (battery) supplies 24 VDC as emergency power for the emergency lighting system and the [a] .
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
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].
On engine start, the ENG START switch disengages at 40% N1, and the generator is automatically connected to the electrical system when N1 is > ______%?
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?
What is the primary function of the GCU (Generator Control Unit)?
The starter-generator automatically transition from start mode to generator mode when the generator exceeds [a]% N1 speed?
When operated by the battery, how many VDC (Volts DC) does the electrical power supply system supply to the airborne electrical system?
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