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On a typical twin-engine airliner, what generates the primary AC electrical power?

Q: On a typical twin-engine airliner, what generates the primary AC electrical power?

Engine-driven integrated drive generators (IDGs). Engine-driven IDGs (or variable-frequency generators) are the primary source of AC power in normal flight.

Battery inverters

Ram air turbine

APU only

Engine-driven integrated drive generators (IDGs)

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