Flashcards in Electrical Systems Deck (30):
Movement of electrons from positive to negative
Difference of potential of two charges
Opposition to current
Measured in Ohms
Measurement of cycles in a given period of time
Current is directly proportional to voltage and inversely proportional to resistance.
Constantly changes amplitude
Reversed direction at regular intervals
Flows in one direction
How many generators are there?
One for each accessory mod and one for the APU
What does each generator provide?
115/200 volts A/C
How many GCUs are there and what do they do?
Regulate generator output and provide over and under voltage protection and also frequency protection
What does the number one generator control?
No. 1 AC Primary Bus
AC Essential Bus
AC Secondary Bus
Controls No. 2 Primary Bus and AC Monitor Bus
APU Generator controls Auxiliary Power
What does the battery provide power for?
DC Essential Bus
What is a circuit breaker?
A means to protect circuits from an over current condition
They are resettable
What do the No. 1 and No. 2 primary AC Bus Breakers supply?
What does the AC Monitor Bus breaker supply?
Main rotor blade deice
What does the AC Secondary Bus supply?
Windshield anti ice and tail rotor blade deice
What do the No. 1 and No. 2 Primary Bus supply power to?
Overhead console circuit breaker panels
What do the battery bus and battery utility bus provide power to?
Lower console circuit breaker panel
What does the battery conditioner/analyzer do?
Monitors battery voltage and temp
Contains circuit for battery charging
How many AC to DC transformers/rectifiers power converters are there?
Two displacement gyroscopes
Each has a vertical and directional gyro
Synchro outputs representing heading, roll, pitch, and roll synchro signals to the TDP and AFCS for distribution to equipment
Displays aircraft attitude or artificial horizon
Aircraft position above sea level
Vertical Speed Indicator
Difference between impact pressure and static pressure
White light on tail rotor pylon
Red and green lights near main landing gears
Anti collision lights
Red and white light under tail
Where is the battery and what is its purpose?
Under co-pilot seat
24 volts DC ni-cad battery
Primary source of power to start APU