Which pump is powered by both ADG and AC BUS 1?

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Multiple Choice

Which pump is powered by both ADG and AC BUS 1?

Explanation:
The main idea is redundancy in power sources for critical hydraulic components. Some pumps are wired to more than one electrical source so they can keep working if one source fails. The pump labeled 3B is connected to both the accessory drive generator (ADG) and AC Bus 1, so it can be powered from either source. This dual feed means it remains operable whether the ADG is supplying power or AC Bus 1 is powered by other means, ensuring hydraulic pressure for the system even in abnormal or loss-of-power conditions. The other pumps are not connected to both sources, so they don’t meet the requirement of being powered by both ADG and AC Bus 1.

The main idea is redundancy in power sources for critical hydraulic components. Some pumps are wired to more than one electrical source so they can keep working if one source fails. The pump labeled 3B is connected to both the accessory drive generator (ADG) and AC Bus 1, so it can be powered from either source. This dual feed means it remains operable whether the ADG is supplying power or AC Bus 1 is powered by other means, ensuring hydraulic pressure for the system even in abnormal or loss-of-power conditions. The other pumps are not connected to both sources, so they don’t meet the requirement of being powered by both ADG and AC Bus 1.

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