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Q2. A 440 V/ 110 V single phase transformer takes a no-load current of 5 A at power factor 0.25 lag. On load the transformer supplies 7.5 KVLA at power factor 0.8 lag. Calculate EACH of the following: (a) The transformer secondary current; (b) The transformer primary current; (c) The primary power factor; (d) The efficiency of the transformer at this load.