8.(a) A 100 KVA, 50 Hz, 440/11000 V, 1-phase transformer has an efficiency of 98.5% when supplying full load current at 0.8 power factor lagging and an efficiency of 99% when supplying half full-load current at unity power factor. Find the core losses and copper losses corresponding to full-load current. At what value of load current will the maximum efficiency be attained?

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Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.