What is the basic principle of operation of a transformer?
Answers
A transformer is a device used to change alternating voltages to any desired value.
It works on the principle of mutual Induction.
working :
It consists of a closed laminated iron core of low hysteresis loss. The lamination's are insulated from one another to minimize eddy currents losses.
Two coils are wounded over the limbs of the core. One of the coil is called primary coil and other secondary.
The primary coil is connected to source of A C current and an outage voltage appears across the terminals of secondary coil due to mutual induction.
When an AC voltage is applied to the primary , current flows through it and the core is magnetized.
The alternating magnetic flux produced by this current links to secondary coil and induces an emf in it.
As a result alternate voltage appears secondary coil as output.
