A 230/mov, single phase transformer takes an input of 350 VA at no load and at rated voltage. The core less is 110 W. Find - i) the iron loss component of no load current - ii) magnetizing component of no load current - iii) no load power factor -

Given: S- 350 VA W1= 110 W

E1= 230 V

Solution: S= V1I0 = E1I0

I0= 1.52 A

W1= V1I0 cosфo

110 = 350 cosфo

Cosф= 0.314

No load pf= 0.314

IW= Io cosф = 1.52 * 0.314= 0.47 A

Iu= Iosin ф = 1.52 * sin (cos-1 0.314) = 1.44 A