Engine : Electricity - 827/1386
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| With what device is the simplest method of controlling the terminal voltage of compound-wound DC generator? |
| A) carbon pile regulator in series with the load |
| B) hand-operated field rheostat connected in series with the shunt field circuit |
| C) balance coil diverting neutral current through the shunt field |
| D) separate exciter in a series with the shunt field |
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