A 50 MVA, 3-phase, 31.2-KV, 0.85- PF-lagging, 50-Hz, 4-pole, Y- connected steam-turbine generator has a synchronous reactance of 10 per-phase, and a negligible armature resistance. This generator is connected to operate in parallel with a large power system (infinite bus). The generator is operating at constant field current with EA = 24.5 KV and 8 = %3D 35°. Find the armature current, and the corresponding power factor. Select one: O a. lA = 1420.2 A , PF = 0.99 %3D lagging O b. IA = 1420.2 A , PF = 0.99 %3D leading O c. IA = 902.1 A , PF = 0.14 leading d. None O e. lA = 902.1 A , PF = 0.85 lagging %3D A 50 MVA, 3-phase, 31.2-KV, 0.85-PF-lagging, 50-Hz, 4-pole, Y-connected steam-turbine generatorhas a synchronous reactance of 10per-phase, and a negligible armatureresistance. This generator isconnected to operate in parallel with alarge power system (infinite bus).The generator is operating at constantfield current with EA = 24.5 KV and 8 =%3D35°.Find the armature current, and thecorresponding power factor.Select one:O a. lA = 1420.2 A , PF = 0.99laggingO b. lA = 1420.2 A , PF = 0.99%3DleadingO c. IA = 902.1 A , PF = 0.14 leadingd. NoneO e. lA = 902.1 A , PF = 0.85 lagging%3D%3D

In this question we need to armature current and power factor of a genrator.

Answered: A 50 MVA, 3-phase, 31.2-KV, 0.85-…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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A 50 MVA, 3-phase, 31.2-KV, 0.85- PF-lagging, 50-Hz, 4-pole, Y- connected steam-turbine generator has a synchronous reactance of 10 per-phase, and a negligible armature resistance. This generator is connected to operate in parallel with a large power system (infinite bus). The generator is operating at constant field current with EA = 24.5 KV and 8 = %3D 35°. Find the armature current, and the corresponding power factor. Select one: O a. lA = 1420.2 A , PF = 0.99 %3D lagging O b. IA = 1420.2 A , PF = 0.99 %3D leading O c. IA = 902.1 A , PF = 0.14 leading d. None O e. lA = 902.1 A , PF = 0.85 lagging %3D

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