In a universal motor, setting the brushes to the neutral plane can be done by connecting voltage to the armature, a voltmeter to the series field, and adjusting the brush position for a _____ reading on the voltmeter.
A) minimum
B) maximum

Question

Quizplus · Accepted Answer

In a universal motor, setting the brushes to the neutral plane minimizes sparking at the brushes. This is achieved by adjusting the brush position until a minimum reading is observed on the voltmeter connected to the series field, indicating minimal current flow through the field due to minimized armature reaction.

In a Universal Motor, Setting the Brushes to the Neutral