Action of Commutator

While the operation of dc motor, there are sparkings at the commutation observed. These can be happening due to

For a four pole, 16 slot armature with two coil-side/slot having lap connected progressive winding has single turn coils. Then number of commutator segment is

The armature rotation in the dc machine and the magnetic field are independent of each other and obey laws of conservation of energy.

Inductive kick causes

For a four pole, 16 slot armature with two coil-side/slot having wave connected progressive winding has single turn coils. The commutator pitch for the machine should be

Commutator action is analogous to _________ in analog electronics.

A 200 V dc machine working at rated speed. Voltage across the commutating terminals should ideally be

Inductive kick is

Commutator is a

The brushes in dc machine are normally placed electrically in interpolar region, to

Under commutation results

Operation of a dc machine will