Explanation and Answer:
If one of the autotransformers fails, it could lead to several potential issues in the cockpit. Autotransformers are electrical transformers with only one winding, and part of the winding does double duty, acting as both the primary and secondary.
A failure of the isolation of the windings of an autotransformer can result in full input voltage being applied to the output1. Also, a break in the part of the winding that is used as both primary and secondary will result in the transformer acting as an inductor in series with the load.
In the context of an aircraft cockpit, this could lead to significant incidents when misunderstood or mishandle. Automation failures can result in the aircraft developing an undesirable state from which it is difficult or impossible to recover using traditional hand flying techniques.
Furthermore, when automation fails or disconnects, the tasks allocated to the pilots may fall beyond their capabilities, individually and or as a team. Therefore, it’s crucial to have a thorough understanding of these systems and their potential failure modes to ensure safe and efficient operation.