The nominal specifications seen on the nameplate of a single-phase transformer are 600 MVA, 95/500 kV, resistance of 2.3% and a reactance of 7%, the magnetizing reactance is 125 pu. The voltage...

The nominal specifications seen on the nameplate of a single-phase transformer are 600 MVA, 95/500 kV, resistance of 2.3% and a reactance of 7%, the magnetizing reactance is 125 pu. The voltage regulation of the transformer, for a full load current with a power factor of 0.92 lagging is:

a) 5,45%
b) 6,87%
c) 5,03%
d) 6,97%
e) 8,36%