WBCS.LIVE practice question

Which electrical device is specifically used to step up or step down alternating current (AC) voltage?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Rectifier
  2. Galvanometer
  3. Inverter
  4. Transformer

Correct answer and explanation

Correct answer: Transformer

Explanation: āœ… Correct Answer: D) Transformer šŸ“š Explanation: A transformer is a highly crucial electrical device used to securely transfer electrical energy from one alternating-current circuit to another. It functions strictly on the principle of electromagnetic induction to either increase (step up) or decrease (step down) the AC voltage levels. It is heavily utilized in power grids to transmit electricity over long distances efficiently.