Describe the principal construction theory and working of a transformer
Answers
Answer:
It is a device which transforms electrical power at low voltage (high current) to electrical power at high voltage (low current) and vice versa.
Principle: It works on the principle of mutual induction.
Construction: It consists of a coil called the primary coil which is wound on a laminated soft iron core. Over the primary is wound another coil called that secondary coil.
If all the magnetic flux due to any current in the primary is linked with the secondary then
Ns/Np = Vs/Vp = k
"k" is called transformation ratio. For step up transformer k>1 and for step down transformer k<1.
Here, Np and Ns are no. of turns in the primary and secondary coil respectively. Vp and Vs are the rms voltages across the primary and secondary coils respectively.
Answer:
The basic principle behind working of transformer is a phenomenon of mutual induction between two windings linked by comman magnetic flux...... Basically a transformer consists of two inductive coils, primary winding,secondary winding. The coils are electrically separated but magnetically linked to each other.