Engine : Electricity - 717/1386
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| « Previous Question |
| What is he most practical method of controlling the RPM of a multi-speed AC motor operating at a constant frequency? |
| A) change the number of operating poles |
| B) change the input voltage |
| C) change the power factor |
| D) change the number of brushes |
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| Comments |
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| cookieclickeraz - 2024-09-12 05:38:11 Registered (3) |
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