FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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Prepare for the FAA AMT Airframe Exam with our comprehensive quiz. This resource offers multiple-choice questions designed to enhance your knowledge and understanding of aviation maintenance concepts.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions?

Changing the armature winding
Varying the engine speed
Varying the strength of the magnetic field
Adjusting the load

The correct answer is: Varying the strength of the magnetic field

The correct answer is varying the strength of the magnetic field (Choice C). By adjusting the strength of the magnetic field produced in the generator, it becomes possible to maintain a constant voltage output even when the conditions, such as aircraft speed or electrical load, vary. This method allows for precise control over the voltage output without risking damage to the generator or the electrical system. In contrast, changing the armature winding (Choice A) would involve physically altering the generator's construction, which is not a practical method for adjusting voltage output in real-time. Varying the engine speed (Choice B) may not always be feasible or efficient for maintaining a constant voltage output. Adjusting the load (Choice D) pertains to changing the electrical load, which can influence voltage output but is not the only practical method for maintaining a constant voltage under varying conditions.