AMT Aviation Maintenance Technician Exam

Question 1

In a typical large transport aircraft AC electrical system, what is the primary purpose of a Constant Speed Drive (CSD) unit?

To convert variable engine RPM into a constant generator speed. To rectify AC voltage to DC voltage for the battery bus. To increase the output voltage of the generator during high-demand periods. To act as a circuit breaker in the event of a generator fault.

Correct Answer:

To convert variable engine RPM into a constant generator speed.

Question 2

A technician is troubleshooting a circuit that repeatedly trips its protective device shortly after being reset. The aircraft is in a high-vibration environment. Which of the following is the most likely cause?

A faulty circuit breaker. An intermittent short to ground in the wiring. The battery is overcharged. The load on the circuit is too low.

Correct Answer:

An intermittent short to ground in the wiring.

Question 3

When comparing a typical aircraft DC alternator to a DC generator, what is a significant advantage of the alternator?

It can produce electrical power even with a completely dead battery. It is less susceptible to damage from reversed polarity. It produces sufficient charging current at lower engine RPMs. It does not require a voltage regulator for operation.

Correct Answer:

It produces sufficient charging current at lower engine RPMs.

Question 4

According to 14 CFR Part 25, if the ability to replace a fuse is essential to safety in flight, what is the minimum number of spare fuses that must be available?

One for each essential circuit. At least 25% of the number of fuses of each rating. At least 50% of the number of fuses of each rating. A number equal to the total number of fuses installed.

Correct Answer:

At least 50% of the number of fuses of each rating.

Question 5

While reviewing an aircraft wiring diagram, a technician notes a component symbol consisting of a coil and a set of contacts. When the coil is energized, it mechanically closes the contacts in a separate circuit. What does this symbol represent?

A diode. A resistor. A capacitor. A relay.

Correct Answer:

A relay.

Exam overview

About this Exam

Prepare with the AMT Aviation Maintenance Technician Exam practice quiz. This question bank includes 100 questions covering aircraft, technician, primary, engine, and corrosion. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AMT Aviation Maintenance Technician Exam

This practice set contains 100 questions from the matching question bank and focuses on aircraft, technician, primary, engine, and corrosion. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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AMT Aviation Maintenance Technician Exam

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