Which direct bus is powered by the APU Battery?

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Multiple Choice

Which direct bus is powered by the APU Battery?

Explanation:
Direct buses are wired to specific power sources, and the APU Battery direct bus is the DC bus that is fed straight from the APU’s own battery. This arrangement means that when the APU battery is supplying power, it will energize this particular bus to run APU-related control circuits and any loads assigned to it, even if other power sources are unavailable. The other buses get power from different sources (main battery, DC emergency, DC essential), so they are not powered by the APU battery. Therefore, the bus powered by the APU Battery is the APU BATT direct bus.

Direct buses are wired to specific power sources, and the APU Battery direct bus is the DC bus that is fed straight from the APU’s own battery. This arrangement means that when the APU battery is supplying power, it will energize this particular bus to run APU-related control circuits and any loads assigned to it, even if other power sources are unavailable. The other buses get power from different sources (main battery, DC emergency, DC essential), so they are not powered by the APU battery. Therefore, the bus powered by the APU Battery is the APU BATT direct bus.

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