Can transformers change an input frequency of 60 Hz to an output frequency that is 10% higher or lower?

Transformers operate on the principle of electromagnetic induction, which allows them to change voltage levels between circuits. However, they are not capable of altering the frequency of the electrical supply passing through them. The frequency of the output voltage produced by a transformer is inherently linked to the input frequency. If you supply a transformer with an input frequency of 60 Hz, the output frequency will also be 60 Hz regardless of the turns ratio of the transformer.

The ability to change frequency is not a function of the transformer itself but rather involves more complex systems such as variable frequency drives (VFDs) or other electronic devices designed specifically for frequency conversion. Therefore, the correct understanding is that transformers cannot change the frequency of the electrical power they are handling. This foundational knowledge in electrical theory explains why this particular response about the transformer's capability pertaining to frequency change is accurate.