Question 1
An avionics component operating from the 28-volt DC aircraft bus draws current through a 14-ohm resistive load. Using Ohm's law, how much current flows in the circuit?
Show answer & explanation
Correct answer: A - 2 A
10 exam-style questions with answers and explanations. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The AET exam has 90 questions and runs 2 hours.
These 10 free AET questions are organized by exam domain, so you can see how each part of the Aircraft Electronics Technician blueprint is tested. Reveal the answer and explanation under each question.
An avionics component operating from the 28-volt DC aircraft bus draws current through a 14-ohm resistive load. Using Ohm's law, how much current flows in the circuit?
Correct answer: A - 2 A
A resistive pitot-heat element draws 5 amperes when energized by the 24-volt DC bus. How much electrical power does the element dissipate?
Correct answer: B - 120 W
Three resistors of 10 Ω, 20 Ω, and 30 Ω are wired in series across a 24-volt source. What is the current flowing through the 20-ohm resistor?
Correct answer: C - 0.4 A
Two 100-ohm resistors are connected in parallel in a power-distribution circuit. What is the total resistance of the combination?
Correct answer: D - 50 Ω
An AC waveform at an aircraft inverter output has a peak value of 170 volts. What is its RMS (effective) voltage?
Correct answer: A - 120 V
In a purely capacitive AC circuit, what is the phase relationship between the current and the applied voltage?
Correct answer: B - Current leads voltage by 90°
A series RLC circuit is operating at its resonant frequency. Which statement correctly describes the circuit at resonance?
Correct answer: C - Inductive reactance equals capacitive reactance
A technician forward-biases a silicon signal diode and it conducts normally. Approximately what forward voltage drop should appear across the diode?
Correct answer: D - 0.7 V
A fixed resistor has three color bands: brown, black, red (first digit, second digit, multiplier). What is its resistance value?
Correct answer: A - 1,000 Ω
A capacitor charges through a series resistor. After one time constant (1τ) has elapsed, the capacitor voltage reaches approximately what percentage of the applied source voltage?
Correct answer: B - 63.2%
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