FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

Which of the following is not a purpose of interpoles in a generator?

Improve efficiency

Reduce armature reaction

Reduce field strength

Interpoles are additional poles inserted in between the main poles of a generator to help reduce the effects of armature reaction on the performance of the generator. They do this by producing a field that opposes the armature's demagnetizing effect. This helps to improve the efficiency of the generator as it reduces the amount of energy that is lost due to armature reaction. Interpoles also help to normalize the magnetic field by producing a constant and stable field, making the generator more reliable. Therefore, option C, reduce field strength, is not a purpose of interpoles in a generator. In fact, reducing the field strength can lead to a decrease in the generator's efficiency and reliability. Options A, B, and D are all valid purposes of interpoles in a generator.

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Normalize the magnetic field

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