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Physics, 12.12.2019 00:31 Hjackson24

Abalanced three-phase y-connected generator with positive sequence has an impedance of 0: 2 + j0: 5 per phase and an internal voltage of 120 v rms per phase. the generator feeds a balanced three-phase y-connected load having an impedance of 39+j28 per phase. the impedance of the line connecting the generator to the load is 0: 8 + j1: 5 per phase. the a-phase internal voltage of the generator is specied as the reference phasor. a) construct the a-phase equivalent circuit of the system. b) calculate the three line currents iaa, ibb and icc. c) calculate the three phase voltages at the load, van, vbn and vcn. d) calculate the line voltages vab, vbc and vca at the terminals of the load. e) calculate the phase voltages at the terminals of the generator, v an, v bn and v cn. f) calculate the line voltages v ab, v bc and v ca the terminals of the generator. g) calculate the average power per phase delivered to the y-connected load h) calculate the total average power delivered to the load. i) calculate the total average power lost in the line. j) calculate the total average power lost in the generator. k) calculate the total number of magnetizing vars absorbed by the load. l) calculate the total complex power delivered by the source.

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