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21 Cards in this Set
- Front
- Back
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AN ELECTRICAL SHOCK OCCURS WHEN WHAT?
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A CURRENT PASSES THROUGH THE HUMAN BODY. THE CURRENT WILL FLOW THROUGH THE BODY'S NERVOUS SYSTEM OR VASCULAR SYSTEM TO GROUND. |
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ELECTRICAL SHOCK DISRUPTS THE BODY'S WHAT?
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NORMAL ELECTRICAL FUNCTIONS (POSSIBLY STOPPING THE HEART, LUNGS OR BOTH/ POSSIBLY CAUSING DEATH) |
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EXTERNAL POWER MUST BE DISCONNECTED AND AIRCRAFT POWER REMOVED PRIOR TO WHAT? |
ENTERING LOAD CNTERS TO REMOVE OR INSTALL ELECTRICAL COMPONENTS |
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WHAT IS VOLTAGE
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THE ELECTRICAL FORCE WHICH CAUSES CURRENT TO FLOW IN A CIRCUIT (MEASURED IN VOLTS ((v)) |
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ELECTRICAL CURRENT IS WHAT |
THE MOVEMENT OF ELECTRICAL CHARGE THROUGH THE ELECTRONIC CIRCUIT (MEASURED IN AMPERES) |
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RESISTANCE CAUSES WHAT |
AN OPPOSITION TO THE FLOW OF ELECTRICITY IN A CIRCUIT |
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RESISTANCE CONTROLS THE AMOUNT OF WHAT
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VOLTAGE AND OR AMPERAGE IN A CIRCUIT |
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RESISTANCE IS MEASURED IN WHAT |
HERTZ (Hz) |
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WHAT IS A BUS? |
A DISTRIBUTION POINT IN AN AIRCRAFT ELECTRICAL SYSTEM TO WHICH THE BATTERYU AND THE GENERATORS ARE CONNECTED. (COMPONENTS THE DERIVE THEIR POWER FROM THE BUS |
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AC GENERATOR |
GENERATOR MOUNTED TO EACH ENGINE REDUCTION GEAR DRIVE OF ENGINES 2, 3, AND 4. THE ENGINE REDUCTION GEAR IS PROTECTED FROM POSSIBLE DAMAGE SHOULD THE GENERATOR SEIZE BY A SHEAR ON A GENERATOR STUB SHAFT. A GEN OFF LIGHT INDICATOR LOCATED ON THE RIGHT INBOARD OVERHEAD FLIGHT STATION PANEL ILLUMINATES WITH A FAILURE OF ANY OF THE ENGINE DRIVEN GENERATORS |
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THE APU AC GENERATOR IS IDENTICAL TO THE GENERATORS USED ON # 2, 3, AND 4 ENGINES EXEPT FOR WHAT?
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IN ADDITION TO THE TRANSFER RELAYS OTHER RELAYS ARE EMPLOYED IN THE AC POWERE DITRIBUTION TYSTEM TO WHAT
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CONNECT AND CONTROL THE POWER TO THE BUSES |
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SENSING RELAYS ARE IDENTICAL AND INTERCHANGEABLE AND DO NOT ENERGIZE UNLESS WHAT |
THE GENERATOR VOLTAGE AND FREQUENCY ARE CORRECT |
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WHER ARE THE SENSING RELAYS LOCATED |
IN THE MAIN AND FORWARD LOAD CENTERS |
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where and why are circuit breakers installed
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on panels throughout the aircraft to protect the various electrical circuits (current limiters provided where necessary)
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what kind of circuit breakers are used in the electrical system
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push pull type
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how many vr/supervisory panels are there?
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4 in the main load center (identical and interchangeable)
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what does the vr/supervisory panel provide?
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control of the generator and connects it to the bus transfer system
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where is the 1 24 volt battery located
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in the aft section of the nose wheel well (normally used to start the apu
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what is the battery capable of powering?
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most dc busses for a limited time in the event all other dc sources fail
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when does the battery receive a continuous charge?
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under normal operation
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