What is the primary reason for brush sparking in a universal motor?

Single Phase Induction Motors MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Single Phase Induction Motorselectrical-engineering-mcqs › single-phase-induction-motors
Published
3 Oct 2018
Last updated
28 May 2026

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Explanation

Brush sparking in a universal motor can be caused by several faults, including a broken armature winding, a shorted armature winding, a shorted field winding, or excessive commutator mica thickness. Therefore, all these factors can lead to sparking.

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