Engine: Electricity

1. A Provide power to the 450 VAC emergency bus from the emergency generator in the emergency mode.
2. B Provide power to the 450 VAC emergency bus from the 450 VAC main bus in the emergency mode.
3. C Provide power to the 450 VAC main bus from the 450 VAC emergency bus in the emergency mode.
4. D Provide power to the 450 VAC main bus from the emergency generator in the emergency mode.

Tip: press A-D to answer