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A three-phase transformer has a nameplate rating of 20 MVA, and the voltage rating of 345kV...

A three-phase transformer has a nameplate rating of 20 MVA, and the voltage rating of 345kV wye /34.5kV delta with a leakage reactance of 12% and transformer connection is wye-delta. Select a base of 20 MVA and 345 kV on the high-voltage side. Please determine the following:
(a) Turn ratio of windings
(b) Transformer reactance referred to low-voltage side in ohms (c) Transformer reactance referred to low-voltage side in per units
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