Question

Mention 4 ways to minimise energy loss in transformer

Answer 1

In order to reduce eddy current losses , the magnetic core of the transformer is not made  from a single magnetic material;because in this case the circulating eddy current flowing will be higher.Instead the magnetic core is a stack of thin silicon steel lamination and the laminations are insulated from one an other by thin layer of varnish  in order to reduce eddy current and hence eddy current losses.

In order to minimize hysteresis losses , soft magnetic materials eg: Si steel, steel alloys ,Mn-Zn ferrite are used because they have high saturation magnetization, Low coercivity ,High magnetic permeability etc. which reduce losses due to hysteresis.

Answer 2

resistance of windings , flux leakage , eddy currents, hysteresis