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Q9. A three phase four wire unbalanced system has a current in the red phase of 10 A at unity power factor and the current in the yellow phase is 8 A lagging by 30°. If the current in the neutral is 3.07 A in phase with the red phase voltage, calculate EACH of the following:

(a) The magnitude of the current in the blue line;

(b) Its angular relationship to the blue line voltage;

(c) The total power dissipated in the three phase loads if the value of the phase voltage is 240 V.