Question

What is the spacing between the brushes for a wave winding when a machine is 6-pole DC armature with 16 slots having 2-coil sides per slot and single-turn coils.

(a) 4 segments

(b) 8 segments

(c) 16 segments

(d) 12 segments

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Answer 1

Right answer is (b) 8 segments

The best explanation: Only 2 brushes are required in this case as the number of poles in wave winding is equal to 2. So, spacing between the brushes is equal to total number of segments i.e. total slots divided by 2. Spacing between brushes = C/A = 16/2 = 8 segments.