KNE223-1-2016 DS.pdf - Adobe Reader File Edit View Window Open Help 會 38 O + 143% - + 1400 V 1 2 3 Figure 2: System for Question 1b. 0 Tools Fill & Sign Comment c. A 208 V, 45 kVA, 0.8 pf leading, delta connected 60 Hz synchronous machine has its synchronous reactance of 2.5 Q and negligible armature resistance. Its friction and windage losses are 1.5 kW and core loss is 1.0 kW. Initially the shaft is supplying a 15 hp load and the motor's power factor is 0.8 leading. Sketch the phasor diagram of this motor and find values for the line current, armature current and excitation voltage. Assume electrical loss is negligible. Question 2. [4 marks] 6:44 PM 48/6/2017