Engine : Electricity - 509/1386
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| If you hear a loud buzzing noise coming from a magnetic motor controller, what should you do? |
| A) assume that the motor is operating at a full load |
| B) notify the electrician or watch engineer of the problem |
| C) assume that the controller is operating normally |
| D) feel the outside of the casing with your hand to see if it is hot |
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