Block IV Flashcards
What is the unit of electrical resistance?
Ohm
What is the opposition of which a device or material offers to the flow of current?
Resistance
A device to connect, disconnect, or change the connections in an electrical current
Switch
Signifies electrical pressure. Force which causes current to flow through an electrical conductor
Voltage
The elementary negative charge that revolves around the nucleus of an atom
Electron
An electric current that flows in one direction only
Direct current
The complete path of an electric current
Circuit
An electric current that flows in both directions
Alternating current
E = IR
current is directly proportional to the electromotive force in the circuit
Ohm’s law
An arrangement where electrical devices are connected so that the total current must flow through all devices
Series circuit
A circuit that consists of both series and parallel networks
Series-parallel circuit
What is the minimum electrical power required to perform normal ground operations
120/208 volt, three-phase, 400 Hz electrical power.
Allowable current is 365(+/- 35) per power receptacle
How many IDG’s are there?
8
IDG 1, 3, and 5 provide power to what?
Air vehicle equipment synchronizing bus (AVE sync bus)
IDG 2, 4, 6, and 8 provide power to what?
Mission equipment synchronizing bus (ME sync bus)
Can supply power to any load buses via their individual bus tie breakers whenever the main generators and ground power sources are not operating
APU generator power system
What are the two main distribution systems?
AC & DC