(adsbygoogle = window.adsbygoogle || []).push({}); 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.

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# Single Phase Transformer

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