30. Induction and Inductance

In the context of transformers, what does a step-up transformer increase?

Which of the following best describes the difference between a step-up transformer and a step-down transformer?

Which of the following methods can be used to determine if a transformer winding has some of its turns shorted together?

Which of the following is not a component of a transformer?

Which of the following statements is true of a step-down transformer but not a step-up transformer?

Which of the following can a transformer accomplish?

In the context of transformers, how does a step-down transformer change the voltage supplied from a power line to a building?

Which of the following best describes what a step-down transformer converts?

A transformer has a turns ratio of $2:1$ (primary:secondary). If $120 V$ is applied to the primary winding, what is the voltage across the secondary winding?

In a typical transformer, the primary and secondary windings are usually wrapped around a(n) _____.

Why does a transformer require $AC$ (alternating current) rather than $DC$ (direct current) to operate?

Which of the following statements about transformers is true?

What is the primary purpose of a transformer in an electrical circuit?

An autotransformer is one of the methods used to:

A transformer is a device used to: