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Q6. A 415/110 V, single-phase transformer takes a no-load current of 6.5 A at 0.3 power factor lagging. On load the transformer supplies 8.5 kW at 0.6 power factor lagging.

Calculate EACH of the following:

(a) The transformer secondary current; (2)

(b) The transformer primary current; (5)

(c) The primary power factor; (2)

(d) The transformer efficiency; (3)

(e) The equivalent primary resistance and series reactance load across the 415 V supply. (4)