A 50 Hz three-phase Y-connected 4 pole synchronousgenerator is rated at 15 kVA, 400 V (line-to-line). Thesynchronous reactance Xs per phase is 20. The no-load(open circuit, line-to line) teminal voltage follows themagnetisation curve shown in Figure Q2a below.500E 450400350300250200150100500.511.52.5Field current (A)Figure Q2a: Magnetisation curve for rotor of a synchronousgenerator.(i) Determine the rated speed.(ii)What is the field current required at full-load operation at0.8 lagging pf.(iii) Draw the phasor diagram for the mode of operationdescribed in (ii) above.(iv) If the field current is set to 1.5 A, calculate the totalactive power that is delivered by the machine when it isoperating as a generator connected to a 400 V (line-to-line) infinite bus and making a torque angle of 5°.Open-circuit terminal voltage (V)

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A 50 Hz three-phase Y-connected 4 pole synchronous generator is rated at 15 kVA, 400 V (line-to-line). The synchronous reactance Xs per phase is 20. The no-load (open circuit, line-to line) teminal voltage follows the magnetisation curve shown in Figure Q2a below.

A 50 Hz three-phase Y-connected 4 pole synchronous generator is rated at 15 kVA, 400 V (line-to-line). The synchronous reactance Xs per phase is 20. The no-load (open circuit, line-to line) teminal voltage follows the magnetisation curve shown in Figure Q2a below.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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