Answer :
Final answer:
Buck-boost transformers are available with secondary windings that can deliver voltages of all of the above (110V, 220V, and 440V).
Explanation:
There are different types of transformers available, such as step-up and step-down transformers. Buck-boost transformers are a type of transformer that can be used to either step up or step down the voltage depending on the configuration. Regarding the question, buck-boost transformers are available with secondary windings that can deliver voltages of all of the above (110V, 220V, and 440V). This means that the secondary winding can be rated to deliver any one of these voltages depending on the specific application and requirements.
