Since the transformation ratio is 4.2, we can calculate the equivalent resistance and reactance as follows:
$R_2' = R_2 \times (k^2) = 0.0627 \times (4.2^2) = 1.104676$
$X_2' = X_2 \times (k^2) = 0.049 \times (4.2^2) = 0.861288$
(ii) Now, we can calculate the
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