When an underspeed fault is detected on an AC generator connected to the aircraft AC busbar, the protection device opens the:
Domanda 542, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
| Exciter Breaker. |
| Generator breaker. |
| Exciter breaker, generator breaker and tie breaker. |
| Exciter Breaker And Generator Breaker. |
