Question 64Electricity & Electronics - QMED

The correct answer is D) turn it down in the ship's lathe. To properly resurface an eccentric DC motor commutator, the recommended method is to turn it down in the ship's lathe. This is because the commutator needs to be machined to ensure a smooth, even surface for the brushes to ride on. Using a lathe allows the commutator to be precisely turned down to the correct diameter and profile, ensuring proper contact with the brushes and optimal motor performance. The other options, such as burnishing with stones or using a hand stone, may not provide the necessary level of precision and surface finish required for a DC motor commutator.