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Q3. Two 415 V three phase alternators supply a ship’s load made up as follows: 1. Lighting totalling 900 kW at U.P.F. 2. Motors totalling 2100 kVA at power factor 0.7 lag; One alternator supplies 1600 kVA at power factor 0.75 lag; (a) Calculate for the other alternator EACH of the following: (i) The kVA output; (ii) The power factor; (iii) The line current. (b) An over excited synchronous motor is now installed to raise the overall power factor to 0.9 lag. Calculate the power factor of the synchronous motor if it takes 400 kW.