What are three transformer types? (Choose three.)

Question

Options

• AStep-up transformer
• BIsolation transformer
• CStep-down transformer
• DDelayed input transformer
• ELimited induction transformer

• A
  81% (22)
• B
  11% (3)
• C
  4% (1)
• D
  4% (1)

Explanation

Step-up transformers (A), isolation transformers (B), and step-down transformers (C) are all established transformer types, each with a distinct function: step-up transformers increase voltage while decreasing current, step-down transformers do the opposite, and isolation transformers transfer power between circuits without a direct electrical connection, primarily for safety and noise reduction. Options D and E ("Delayed input transformer" and "Limited induction transformer") are fabricated terms that do not correspond to any recognized transformer category and are included solely as distractors. You can spot them as wrong because real transformer names describe what the device does to voltage, current, or the circuit relationship, while these names describe vague or nonsensical electrical behaviors.

Memory tip: Think "Up, Down, Isolated" as the three core transformer jobs. Any answer choice that does not describe a clear physical action on voltage or circuit isolation is almost certainly a distractor.

No community discussion yet for this question.