What is the implication if a transformer puts out voltage without load but not with load?

When a transformer outputs voltage with no load but fails to maintain that voltage when a load is applied, it typically indicates a potential fault either in the load or within the transformer itself. This behavior suggests that the transformer is able to generate the necessary voltage when there is no energy demand but cannot sustain that voltage under load conditions.

This scenario often points to issues such as a winding fault in the transformer, which could prevent it from handling electrical current properly when the load is applied. Alternatively, it might indicate that the load has developed a problem, such as a short circuit or excessive resistance that prevents the transformer from delivering power effectively. In either case, further investigation is necessary to identify and rectify any faults that compromise the reliability and performance of the electrical system.

Understanding these potential issues allows technicians to troubleshoot effectively, ensuring that both the transformer and the load are functioning optimally. The other choices, while plausible in different contexts, do not directly account for the specific scenario of a voltage drop under load conditions, making them less relevant.