Engine_2014 : Electricity - 2160/2299
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| Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions? |
| A) The generator and bus transfer section |
| B) The 450 volt, 60 cycle, 3 phase bus |
| C) The 120 volt, 60 cycle, 3 phase bus |
| D) The 24 volt DC bus |
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