Electrical Systems Flashcards
What is an electrical shock?
It’s the current that passes through the human body.
What does an electrical shock causes to the body?
it disrupts the body’s normal functions, can stop the heart, lungs or both.
What are Load Centers?
It’s an area or space where there is high voltage.
What is voltage?
It’s the electrical force.
How is Voltage measure?
It’s measure in volts (V)
What is electrical current?
It’s the movement of electrical charge
How is electrical current measure?
It’s measure in amperes (AMPS, A)
What is Resistance?
Causes an opposition to the flow of electricity in a circuit.
How is Resistance measure?
It’s measure in Ohms
What is Hertz?
It’s an electrical unit of frequency equal to the one cycle per second
How is Hertz measure?
It’s measure in Hertz (Hz)
What is a Bus?
A distribution point in an aircraft electrical system to which the battery and the generator are connected.
How is the primary AC electrical power provided on a P-8?
by 2 engine Integrated Drive Generators
Do the APU in a P-8 operate a Generator?
Yes
On a P-8 the APU operates a generator and can supply power to what?
To all AC buses on the ground or in-flight
What are Sensing Relays for a P-8?
They connect and control power to the buses.
What are circuit breakers?
They protect the various electrical circuits when an overload of electricity occurs.
Circuit breakers used in the electrical system are of what type?
Push-Pull Type
How many Voltage Regulators (VR)/Supervisory Panels are in the main load center?
4
What are Regulators for?
to regulate voltage.
What type and how many batteries are in a P-8?
2 24-volt nickel-cadmium batteries
Where are the batteries located for the P-8?
They are located in the electronics compartment.
