Engine : Electricity - 874/1386
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| What is a purpose of the automatic bus transfer device shown in the illustration? EL-0014 |
| A) Provide power to the 450 VAC main bus from the 450 VAC emergency bus in the emergency mode. |
| B) Provide power to the 450 VAC emergency bus from the 450 VAC main bus in the emergency mode. |
| C) Provide power to the 450 VAC emergency bus from the emergency generator in the emergency mode. |
| D) Provide power to the 450 VAC main bus from the emergency generator in the emergency mode. |
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Illustration EL-0014
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