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Answer Posted / sujata wagh
Transformer impedence is the voltage drop on full load due
to winding resistance and it express as % impedence.
% impedence is measured during short circuit test.
forluma to calculate % impedence is =
% impedence = impedence voltage*100/rated voltage
where impedence voltage is the voltage applying at one end
for full load corrent, while the other shorted is shorted.
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