A three-phase delta-connected load, each phase of which has an inductive reactance of 402 and a resistance of 2502, is fed from the secondary of a three-phase star- connected transformer which has a phase voltage of 230 V. Draw the circuit diagram of the system and calculate: the current in each phase of the load. (ii) the p.d. across each phase of the load. (iii) the current in the transformer secondary windings. (iv) the total active power taken from the supply and its power factor. Answer: (i) 8.44A, (ii) 398V, (iii)14.62A, (iv) 5349W