Engine : Electricity - 256/1386
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| Brushes in a DC generator must be positioned in the neutral plane to avoid excessive sparking associated with the brushes. What device is used to prevent the shifting of the neutral plane due to armature reaction for varying generator loads. |
| A) brushing rigging |
| B) field pole windings |
| C) armature windings |
| D) commutating pole windings |
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