FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

How can you test generator or motor armature windings for opens?

Using a multimeter on the resistive setting

By heating the armature and observing color change

Placing armature in a growler and connecting a 110V test light on adjacent segments; light should light

Testing the armature windings for opens involves checking for any breaks or discontinuities in the wire that could affect its performance. Options B and D are incorrect because they do not directly test for open circuits in the armature windings. Option A may provide some information on the resistance of the windings, but it does not specifically check for opens. Therefore, option C is the best method as it uses a growler and a test light to directly check for opens in the armature windings.

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Applying a magnetic field and observing the orientation

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