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Q3). A three-phase 4-wire unbalanced system has a current in the R phase of 5 A U.P.F. and a current in the S phase of 8 A lagging by 30o.

(a) If the current in the neutral line is 1.93 A in phase with VRS, calculate EACH of the following:

(i) the T phase current; (9)

(ii) the phase angle of the T phase current with respect to the T phase voltage. (3)

(b) Calculate the total power drawn by the three-phase system if the phase voltage is 240 V. (4)