Question

A 1200/400,50Hz single phase transformer had 100 turns on the secondary winding calculate the number of turnson it's primary.

Answer 1

Explanation:

. A step down transformer operates on 50Hz ac supply with a primary voltage of 230V. The cross section al area of the core is 50 cm2. Calculate i) The maximum value of flux ii) The maximum value of flux density.

iii) Voltage induced in the secondary winding.

Assume primary and secondary turns to be 500 and 250.

Ans: i) 2.07 mWb ii) 0.4144 T iii) 114.88 Volts

Hints : given E1 = 230V, A = 50cm2, N1 = 500, N2 = 250