How the two windings of a transformer are linked?

Are both windings in a transformer connected?

In Autotransformer, one single winding is used as primary winding as well as secondary winding i.e. both windings are electrically connected.

Can we connect 2 transformers in series?

yes. If both transformers are identical (this also implies identical secondary loads at any time) you should have no problems. In case the secondary loads are different the asymmetrical primary voltage drops might harm one transformer.

How does a transformer transfer electrical energy from one circuit to another?

A transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling with no moving parts. A transformer comprises two or more coupled windings, or a single tapped winding and, in most cases, a magnetic core to concentrate magnetic flux.

How instrument transformer is different from auto transformer explain in detail?

There are several differences between the autotransformer and the conventional transformer. One of the major difference between them is that the autotransformer has only one winding whereas the conventional transformer has two separate windings.

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