1. The problem statement, all variables and given/known data Figure 1 shows the equivalent circuit of a single phase transformer and figure 2 shows the approximate equivalent circuit. Reduce the circuit to approximate form and find: rm, xm, R1, X1 Using the approximate equivalent circuit calculate- With the transformer operating at no-load: primary current , primary power factor, primary real power, secondary voltage. I am given in the equivalent circuit: r1, r2, rm, x1,x2,xm, turns ratio, V1 2. Relevant equations R1 = r1' + r2' X1 = x1 + x2' = x1 +x2(N2/N1) 3. The attempt at a solution Using the equations above I have found R1 and X1 I now need to find rm and xm of the approximate equivalent circuit and primary current , primary power factor, primary real power, secondary voltage. I am struggling with this, any help would be appreciated, thankyou.