Engine : Electricity - 265/1386
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| What is the function of the commutator associated with a DC motor? |
| A) shift the neutral running plane of the brushes to prevent sparking |
| B) reduce the reluctance of the magnetic path through the motor |
| C) reverse the flow of current in the field poles |
| D) allow current flow in the armature windings under a given pole to be in the same direction at all times |
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