Flashcards on Aircraft Electrical System Principles
Aircraft Electrical System Principles: A Comprehensive Guide
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Aircraft Electrical Systems
17 cards
Card 1
Question: What two things must you consider when selecting wire size for an aircraft electrical installation?
Answer: The current-carrying ability of the wire and the voltage drop caused by current flow through the wire.
Card 2
Question: What is the maximum number of wires that should be connected to any single stud in a terminal strip?
Answer: The presentation asks the question but does not provide a numeric answer.
Card 3
Question: How is a wire bundle protected from chafing when passing through a fuselage frame or bulkhead hole?
Answer: Cover the hole edges with a flexible grommet and secure the bundle to the structure with a cushioned clamp.
Card 4
Question: What are common causes of wire failure in a crimped connector?
Answer: The wire was not inserted far enough into the connector and/or the connector was excessively crimped.
Card 5
Question: What three things must be synchronized before placing an aircraft AC generator on the same bus with another AC generator?
Answer: The presentation asks the question but does not provide the three synchronization items.
Card 6
Question: What kind of clamp is used to secure a wire bundle to the aircraft structure?
Answer: A cushioned clamp.
Card 7
Question: Why are solderless splices usually better than soldered splices in aircraft wiring?
Answer: Soldered joints are usually stiff; vibration can harden the wire and cause breakage. Solderless splices keep the joint flexible to resist vibration-in
Card 8
Question: When do DC electric motors draw several times their rated current?
Answer: During starting.
Card 9
Question: When must an electrical switch be derated from its nominal current rating?
Answer: When it is used in a high inrush circuit or circuits that draw several times their rated current (such as DC motor circuits).
Card 10
Question: Does an aircraft engine electric starter use a series or parallel motor?
Answer: A series-wound motor.