Q2) A three phase 400 V, Y- connected synchronous generator has maximum armature current l=420A, synchronous reactance X,-0.25 2. The maximum of excitation voltage EA =308V (phase). The prime mover limit is 290 kW. assume core losses an friction losses amount to 12 kW. 1- Sketch the capability curve of the generator showing Qmax and Pma can be delivered from the generator. 2- Determine the power factor when the stator current and prime-mover power both are with maximum limits. 3- Determine the power factor when the stator current and field current both with maximum limits. 4- Determine the range of lagging power factor operation is possible when the stator current is maximum. "Hint use cosine rule for a triangle"

Q2) A three phase 400 V, Y- connected synchronous generator has maximum armature current l=420A, synchronous reactance X,-0.25 2. The maximum of excitation voltage EA =308V (phase). The prime mover limit is 290 kW. assume core losses an friction losses amount to 12 kW. 1- Sketch the capability curve of the generator showing Qmax and Pma can be delivered from the generator. 2- Determine the power factor when the stator current and prime-mover power both are with maximum limits. 3- Determine the power factor when the stator current and field current both with maximum limits. 4- Determine the range of lagging power factor operation is possible when the stator current is maximum. "Hint use cosine rule for a triangle"

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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