Question

What is a transformer and what are its types?

Answer 1

Transformer:

1. A transformer is a device that transfers electric energy from one alternating-current circuit to one or more other circuits.
2. It does so by either increasing (stepping up) or reducing (stepping down) the voltage without a change in the frequency of AC between circuits.
3. It is a device used in the power transmission of electric energy.
4. It is a device employing the principle of mutual induction to convert variations of current in a primary circuit into variations of voltage and current in a secondary circuit.
5. Rating of transformer is in kilo volt-ampere(KVA)
6. There are three basic parts of a transformer:
   1. an iron core that serves as a magnetic conductor,
   2. a primary winding or coil of wire and.
   3. a secondary winding or coil of wire.

Types of transformer:

1. Transformers generally have one of two types of cores: Core Type and Shell Type.
2. These two types are distinguished from each other by the manner in which the primary and secondary coils are placed around the steel core.
3. Further, they are distinguished as step-up and step-down transformers.
4. Also other types are autotransformers, Power transformers, and Auxiliary Transformers.

Hence, A transformer is a device that transfers electric energy from one alternating-current circuit to one or more other circuits.