Question

What is a transformer? Explain the principle, construction, working and theory of a transformer.

Answer 1

changing the frequency. Transformer can increase or decrease the voltage or current in a circuit.

WORKING PRINCIPLE:

Transformer works on the principle of Mutual induction between two windings (Primary and secondary) linked by common magnetic flux. When source of alternating voltage is connected to the Primary coil the magnetic flux produced in primary induces flux in secondary coil too. The frequency remain same.

Construction:-

it consist of two inductive winding and a steel core which is laminated. The core is constructed by stacking sheets of steel with minimum air gap between the two. The steel is used because of its high permeability and low hysteresis loss. The stacking must of alternating sides of joint.