A 480V, 375kVA 0.8lagging power factor, star connected S.G has a syn Reactance of 0.4 ohm and negligible armature resistance. This generator is supplying power to a 480V, 80kW. 0.8 leading P.f star connected S.M with syn . Reactance of 18 and negligible armature resistance , the SG is adjusted to have terminal voltage of 480V when motor operating at rated power and unity power factor . Find : 1) E for both machines. 2) Terminal voltage and p.f if flux of motor increased by 10%

A 480V, 375kVA 0.8lagging power factor, star connected S.G has a syn Reactance of 0.4 ohm and negligible armature resistance. This generator is supplying power to a 480V, 80kW. 0.8 leading P.f star connected S.M with syn . Reactance of 18 and negligible armature resistance , the SG is adjusted to have terminal voltage of 480V when motor operating at rated power and unity power factor . Find : 1) E for both machines. 2) Terminal voltage and p.f if flux of motor increased by 10%

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

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.1P

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