Boeing 747-8 System Practice Exam

During load shedding, when an additional AC power source becomes available, how are loads restored?

In reverse order In the same order as they were shed All at once Randomly

Correct Answer:

In reverse order

Explanation:

When extra AC power becomes available after shedding loads, the restores are done in the opposite sequence from how they were shed. This reverse ordering brings back the most critical or last-shed loads first and then gradually reconnects the remaining ones as power allows. The benefit is a controlled, staged re-energization that prevents large inrush currents or overload on the power source and buses, helping to keep essential systems online and avoid triggering protective trips. Restoring all at once would risk overloading the system, and restoring in the same or a random order could cause voltage fluctuations or further trips.

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