State the different types of transformers. Describe the construction and general principle of transformer.

State the different types of transformers. Describe the construction and general principle of transformer.
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1 Answer

Answer :

Different types of transformer are

core type

shell type

Berry type

Construction of transformer:

image

image

OR

Shell Type construction can be consider for diagram


Transformer consists of two windings that are electrically isolated from each other. When a time varying voltage is applied to one winding, it sets up an alternating flux in the magnetic core. Due to the high permeability of the core, most of the flux links the other winding and induces and alternating e.m.f. in that winding. The frequency of the induced e.m.f. in the winding is same as that of the voltage in the first winding. If the other winding is connected to the load, the induced e.m.f. in the winding circulate a current in it. Thus, the power is transferred from one winding to the other through the magnetic flux in the core.

[The transformer consists of following

i) magnetic circuit consisting of links (core), yokes and clamping structures (providing the flux path)

ii) Electric circuit consisting of primary and secondary windings

iii) dielectric circuit consisting of insulation in different forms and used at different places in the transformer (core to the primary winding, primary winding to secondary winding etc).

iv) Tank and accessories] this is optional answer.

Principle of transformer:

The operation of the transformer is based on the principle of mutual induction between two circuits linked by a common magnetic field. 

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