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| Q. |
What material is used in the tunnel of the rotor of the single phase induction motor? |
| A. | aluminium |
| B. | copper |
| C. | steel |
| D. | wood |
| Answer» A. aluminium | |
| Explanation: the rotor consists of a block of slotted laminations. the slots form a series of tunnels that are filled with aluminium in its molten state. | |
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