Which of the following statements is true regarding transformers?

Transformers are essential components in electrical systems, functioning to adjust voltage levels between circuits. Their operation is based on the principle of electromagnetic induction, allowing for the transfer of electrical energy from one circuit to another, often at different voltage levels, while maintaining efficiency and minimizing losses.

When considering the various statements made regarding transformers, if both statements A and B accurately describe different aspects of transformer operation or characteristics, then the option indicating that both are true is indeed the correct choice. For instance, if one statement relates to the efficiency of transformers and the other pertains to the relationship between primary and secondary voltages or current, both being true reflects a comprehensive understanding of transformer functionality.

In practical applications, understanding these principles is crucial for electrical contractors to ensure that transformers are properly installed and maintained, which ultimately affects the performance of the entire electrical system.