Which are the three primary electrical power sources on the A321?

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Multiple Choice

Which are the three primary electrical power sources on the A321?

Explanation:
Power for the A321 comes from three main sources that cover both flight and ground operations: the two engine-driven generators (one on each engine), the APU generator, and external power on the ground. When either engine is running, its generator supplies electrical power to the aircraft systems. The APU generator provides a separate source when the APU is running, which is especially useful on the ground or when extra power is needed in flight. When the aircraft is parked, a ground power unit can be connected to supply power without running the engines or the APU. This setup offers redundancy so essential systems stay powered if one source isn’t available.

Power for the A321 comes from three main sources that cover both flight and ground operations: the two engine-driven generators (one on each engine), the APU generator, and external power on the ground. When either engine is running, its generator supplies electrical power to the aircraft systems. The APU generator provides a separate source when the APU is running, which is especially useful on the ground or when extra power is needed in flight. When the aircraft is parked, a ground power unit can be connected to supply power without running the engines or the APU. This setup offers redundancy so essential systems stay powered if one source isn’t available.

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