Engine : Electricity - 1233/1386
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| How is the speed of the propeller shaft directly coupled to an AC synchronous drive motor changed when powered by either a dedicated or integrated constant frequency alternator in an AC diesel-electric drive system? |
| A) Varying the generator speed |
| B) Varying the number of motor poles |
| C) Varying the output frequency of the power converter |
| D) Varying the field strength of the generator |
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