Question

how many type of transformer ???

Answer 1

There are three primary types of voltage transformers (VT): electromagnetic, capacitor, and optical. 

Answer 2

Hlo frnds
There are four main types of transformations: translation, rotation, reflection and dilation. These transformations fall into two categories: rigid transformations that do not change the shape or size of the preimage and non-rigid transformations that change the size but not the shape of the preimage.
Hope hlpu