Test yourself: 5 hard theory questions, free Airspace, weather, regs and aerodynamics, FAA-style — instant score, every answer explained. No signup.
Free testeasyelectrical-systems
Standard AC power frequency on most transport aircraft is:
A
50 Hz
B
400 Hz
C
60 Hz
D
800 Hz
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See where you stand: 5 hard questions, instant score, every answer explained.