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 does EMF stand for in electrical systems?
Answer: Electromotive Force
EMF stands for Electromotive Force, which is the energy per unit charge supplied by a source such as a battery.
A capacitor in an AC circuit acts primarily as which of the following?
Answer: Reactance element blocking DC
A capacitor blocks DC and presents capacitive reactance to AC signals, allowing AC to pass while blocking DC.
Which instrument is used to measure current flow in an aircraft circuit?
Answer: Ammeter
An ammeter measures the flow of electric current in amperes and must be connected in series with the circuit.
What is the purpose of a bus bar in an aircraft electrical system?
Answer: To distribute power to multiple circuits
A bus bar serves as a common distribution point that supplies power from the main source to multiple branch circuits.
What is the typical aircraft standard DC bus voltage in most general aviation aircraft?
Answer: 28V
Most aircraft use a 28V DC system, which provides adequate power while keeping wire weight practical.
Which component prevents excessive current from damaging aircraft wiring?
Answer: Circuit breaker
Circuit breakers protect aircraft wiring by opening the circuit when current exceeds a safe rated value.