480 V, 50 Hz, 6 pole, star connected generator has phase reactance 1.2 Ω and phase active resistance Is 0.8 Ω. The full load current of the generator is 60 A at 0.8 back power factor. Friction and wind losses are 1.5 kW, core losses are 1 kW. With 5 ampere excitation current when the generator is unloaded the terminal voltage is 480 V. Excitation circuit voltage is 200 V. According to this; a-) total power to be given to the generator, b-) terminal voltage of the generator under load Find.

480 V, 50 Hz, 6 pole, star connected generator has phase reactance 1.2 Ω and phase active resistance Is 0.8 Ω. The full load current of the generator is 60 A at 0.8 back power factor. Friction and wind losses are 1.5 kW, core losses are 1 kW. With 5 ampere excitation current when the generator is unloaded the terminal voltage is 480 V. Excitation circuit voltage is 200 V. According to this; a-) total power to be given to the generator, b-) terminal voltage of the generator under load Find.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.7P

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