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A single phase, 300???, 11??/2.2??, 60 ?? transformer has the following parameters referred to the high-voltage...

A single phase, 300???, 11??/2.2??, 60 ?? transformer has the following parameters referred to the high-voltage side: ?? = 57.6??, ?? = 16.34??, ??? = 2.784? and ??? = 3.5?. If a load of ????? = 16∠30°? connected to the low-voltage side: a) Find the voltage regulation? b) Draw the phasor diagram? c) Find the efficiency of the transformer? d) Repeat part a and b at ????? = 16∠ − 30°??

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