Page 588 - Basic Electrical Engineering
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Voltage regulation










               To calculate efficiency, we need to calculate the copper loss and core loss.


               Full- oad copper loss,






               Core loss











               Efficiency,
















               Example 6.15   A 10 kVA 440/220 V, 50 Hz single-phase transformer gave

               the following test results when both the following tests were conducted on
               the high-voltage side:
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