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QUESTION
A transformer is rated at 629 VA and has a primary voltage of 435 V and a secondary voltage of 133 V. Its rated copper losses are 46 W and the iron...
A transformer is rated at 629 VA and has a primary voltage of 435 V and a
secondary voltage of 133 V. Its rated copper losses are 46 W and the iron
losses are 20 W. Calculate the load factor (in %) that would result in
maximum operating efficiency at unity power factor.
