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# C-40A Specific AE

### EAWS

What are the safety precautions that have to be followed when working with electrical systems? Before working on electrical systems always pull and tag-out circuit breakers and if someone does happen to come in contact with a live electrical conductor DO NOT touch the equipment, cord or person, but shut off power first!
Define Voltage. Voltage is the electrical force which causes a current to flow in a circuit. It is measured in Volts (V).
Define Electrical Current. Electrical current is the movement of electrical charge through the electronic circuit. It is measured in Amperes (AMPS, A).
Define Resistance. Resistance causes an opposition to the flow of electricity in a circuit. It controls the amount of Voltage and/or Amperage in a circuit. It is measured in Ohms (Ω).
Define Hertz. Hertz is an electrical unit of frequency equal to one cycle per second. Cycles per second are measured in Hertz (Hz).
What is the bus in an electrical system? A bus is a distribution point in an aircraft electrical system to which the batteries and the generators are connected.
Where are the main and auxiliary batteries located? In the E/E compartment. The auxiliary battery is fwd of the main battery.
How much electric power does the IDG produce? The IDG makes three-phase, 115/200V AC, 400Hz.
What component is used to create DC power from the normal AC source and where is it located? Transformer-rectifier Units (TRU). They are located in the E/E compartment.
What are the two functions of the main battery? To supply power to critical airplane systems (AC and DC standby buses) when normal power siurces are not available, and as a back up power supply for the AC system control and protection power supply for APU start.
What is the purpose of the auxiliary battery? Helps the main battery supply power to critical airplane systems (AC and DC standby buses).
What is the purpose of position lights? to provide aircraft location informationin three manners: a. airplane position b. direction c. attitude
Where are the position lights located? In the tip of each wing. Red-port, green-stbd.
Where are the fixed landing lights and the retractable landing lights located? Fixed landing lights-in the root of each wing Retractable landing lights-below the fixed landing lights on the airplane underbelly
Where is the taxi and runway turnoff light located? The taxi light is on the front of the NLG strut and the runway turnoff light is on the root of the fwd wing.
What is the purpose of anti-collision lights and where are they located? They make the airplane easier to be seen in the air and on the ground. One red anti-collision light each on the top and the bottom of the fuselage and three white anti-collision lights, one on each wing tip and one on the tail cone.
Created by: snupf1

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