Do transformers have many moving parts?

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Transformers transfer energy through electromagnetic induction between stationary windings around a fixed core. The primary and secondary windings and the core stay in place during normal operation, so there aren’t mechanisms moving to transfer power. This static design is why transformers are reliable and long-lasting. Some transformers do include moving parts like voltage-tap changers or cooling fans, but those are not part of the core energy-transfer process and aren’t present in all units. In general, there are few moving parts, making “No” the correct answer.