(c) A 2400 V, 1000 KVA, 0.85 power factor (PF) lagging, 50 Hz six-poles, Y-connected synchronous generator has a synchronous reactance of 1.4 2 and an armature resistance of 0.15 2. At 50 Hz, its friction and windage losses are 25 kW, and its core losses are 15 kW. The field circuit has a DC voltage of 230 V, and the maximum IF is 10 A. The resistance of the field circuit is adjustable over the range from 20 to 200 £2. The Open Circuit Characteristic (OCC) of this generator is shown in Figure Q1(c). Calculate the internal generated voltage, EA of this machine at rated conditions. (i) (ii) (iii) Determine the required field current to make Vr equal to 2400 V when the generator is running at rated conditions. If this machine is operating at rated conditions, determine the input torque, TApp that must be applied to the shaft of this generator.

(c) A 2400 V, 1000 KVA, 0.85 power factor (PF) lagging, 50 Hz six-poles, Y-connected synchronous generator has a synchronous reactance of 1.4 2 and an armature resistance of 0.15 2. At 50 Hz, its friction and windage losses are 25 kW, and its core losses are 15 kW. The field circuit has a DC voltage of 230 V, and the maximum IF is 10 A. The resistance of the field circuit is adjustable over the range from 20 to 200 £2. The Open Circuit Characteristic (OCC) of this generator is shown in Figure Q1(c). Calculate the internal generated voltage, EA of this machine at rated conditions. (i) (ii) (iii) Determine the required field current to make Vr equal to 2400 V when the generator is running at rated conditions. If this machine is operating at rated conditions, determine the input torque, TApp that must be applied to the shaft of this generator.

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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