Aviation Computer Based Training (CBT) 2025 – 400 Free Practice Questions to Pass the Exam

The correct choice is the generator bus tie(s). In aviation electrical systems, bus ties are critical components that allow for the interconnection between different generator busses. When one generator is inoperative, such as Generator 2 in this scenario, the bus tie can connect Generator 1's output to Generator Bus No. 2. This ensures that power is available to the bus that is otherwise isolated due to the inactive generator, maintaining the electrical supply to critical systems and enhancing the overall reliability of the aircraft's electrical system.

This mechanism is essential to ensure that the aircraft remains operational and can transfer power seamlessly between generators as needed, thus providing redundancy and enhancing safety. The bus tie's capability to switch power sources ensures that losses from a failed generator can be mitigated.

The other components, while integral to the overall power management and distribution system, do not specifically provide the interconnection needed to supply power from one generator to another bus in the event of generator failure.