# A transformer when supplying a load, maintained at 11 kV across load terminals. When the load was switched...

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A transformer when supplying a load, maintained at 11 kV across load terminals. When the load was switched off, the terminal voltage becomes 11550 V, what is the voltage regulation at this load? (1) 11.55 % (2) 5.5% (3) 5% (4) 55%

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