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Which of the following are the major parts of a dc motor?
| 1. |
Armature assembly. |
| 2. |
Field assembly. |
| 3. |
Brush assembly. |
| 4. |
Commutator. |
| 5. |
Pole piece. |
| 6. |
Rheostat. |
| 7. |
End frame. |
| | A) 3, 5, 6, 7. |
| * | B) 1, 2, 3, 7. |
| | C) 2, 3, 4, 5. |
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