Which one of the following devices changes low voltage alternating cur

Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice versa ?

Generator

Motor

Transformer

Vibrator

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Answer is Wrong!

This question was previously asked in

UPSC NDA-1 – 2017

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The device that changes low voltage alternating current to high voltage alternating current and vice versa is a transformer. Transformers operate based on electromagnetic induction and are designed to step up (increase) or step down (decrease) AC voltage while changing the current proportionally. They require an alternating current to function.

– Transformers use electromagnetic induction to change AC voltage and current levels.
– Step-up transformers increase voltage and decrease current.
– Step-down transformers decrease voltage and increase current.
– Transformers only work with alternating current (AC).

Generators produce electrical energy. Motors convert electrical energy to mechanical energy. Vibrators are often used in older circuits to convert DC to pulsed DC or AC before it can be stepped up by a transformer, but the primary voltage conversion is done by the transformer.

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