Electrical Fundamentals Flashcards
6 cards from real AET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Electrical Fundamentals flashcards as text
What is inductance measured in?
Answer: Henrys
Inductance is measured in henrys (H), named after Joseph Henry, and represents the opposition to changes in current.
In an aircraft, what device converts AC power to DC power?
Answer: Rectifier
A rectifier converts alternating current (AC) to direct current (DC) using diodes to allow only one direction of current flow.
What is the function of a zener diode in an avionics circuit?
Answer: Voltage regulation
A zener diode maintains a constant reference voltage by conducting in reverse at its breakdown voltage, making it useful for voltage regulation.
What type of fault occurs when a conductor contacts the aircraft structure unintentionally?
Answer: Short to ground
A short to ground (or ground fault) occurs when an uninsulated conductor touches the aircraft's metallic structure, creating an unintended current path.
Which law states that the algebraic sum of all currents entering and leaving a node equals zero?
Answer: Kirchhoff's Current Law
Kirchhoff's Current Law (KCL) states that the total current entering a junction equals the total current leaving it.
What is the primary purpose of bonding straps in aircraft electrical systems?
Answer: To provide a low-resistance ground path and prevent static buildup
Bonding straps provide a low-resistance electrical connection between aircraft components to equalize potential and prevent static discharge or corrosion.