This is the 17524th most frequent Russian word.
трансформатор
Transformer: an electrical device that transfers energy between circuits through electromagnetic induction.
Here, 'трансформатор' is used in a technical sense to describe a device used in electrical systems.
Этот трансформатор используется для преобразования напряжения.
This transformer is used to convert voltage.
Here, 'трансформатор' refers to its theoretical usage in an educational context.
В школе мы изучили принцип работы трансформатора.
In school, we studied the principle of operation of a transformer.
Here, 'трансформатор' is used in a practical everyday context, describing a consumer item.