A 380V, 50H2, A-connected, 6-pole SG has a per-phase synchronous reactance of 0.8Q. Its full- load armature current is 65A at 0.82 PF lagging. This generator has Pt+w=1.2kW and Peore=0.8kW at 60HZ at full load. Its armature resistance is being ignored. The field current has been adjusted so that the terminal voltage is 380V at no load. 1. Find the speed of rotation of this generator? 2. Find the terminal voltage if it is loaded with the rated current at 0.82 PF leading. 3. Find the efficiency when it is operating at the rated current at 0.82 PF leading. 4. Find the voltage regulation of this generator at 0.82 PF leading

A 380V, 50H2, A-connected, 6-pole SG has a per-phase synchronous reactance of 0.8Q. Its full- load armature current is 65A at 0.82 PF lagging. This generator has Pt+w=1.2kW and Peore=0.8kW at 60HZ at full load. Its armature resistance is being ignored. The field current has been adjusted so that the terminal voltage is 380V at no load. 1. Find the speed of rotation of this generator? 2. Find the terminal voltage if it is loaded with the rated current at 0.82 PF leading. 3. Find the efficiency when it is operating at the rated current at 0.82 PF leading. 4. Find the voltage regulation of this generator at 0.82 PF leading

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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Question

A 380V, 50HZ, A-connected, 6-pole SG has a per-phase synchronous reactance of 0.82. Its full-
load armature current is 65A at 0.82 PF lagging. This generator has Ptw=1.2kW and Pcore=0.8kW
at 60HZ at full load. Its armature resistance is being ignored. The field current has been adjusted
so that the terminal voltage is 380V at no load.
1. Find the speed of rotation of this generator?
2. Find the terminal voltage if it is loaded with the rated current at 0.82 PF leading.
3. Find the efficiency when it is operating at the rated current at 0.82 PF leading.
4. Find the voltage regulation of this generator at 0.82 PF leading

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