Rotating a rotor ____ by hand will generally reveal a bad bearing.
A) shaft
B) grease fitting
C) brush
D) commutator bar

Question

Quizplus · Accepted Answer

Rotating a rotor by hand and feeling for any roughness or resistance can indicate a bad bearing. Checking the other options (grease fitting, brush, commutator bar) may also be necessary in diagnosing issues with the motor, but they would not necessarily reveal a bad bearing.

Rotating a Rotor ____ by Hand Will Generally Reveal a Bad