3 4 5 Question 2 A 220V, 5.5 kW, DC shunt generator has an armature resistance of 0.2 0 and a total field-circuit resistance of 55 0. The generator is supplying rated current at rated terminal voltage. Answer the following questions relating to this generator: () What is the generator armature current? (a) 17 A (b) 21 A (c) 25 A (d) 29 A (e) 33 A (ii) What is the armature internal voltage Eo? (а) 214.2 V (b) 224.2 V (c) 220.0 V (d) 225.0 V (e) 225.8 V (ii) What is the efficiency of the generator if rotational losses are 300 W? (а) 73.9% (b) 78.2% (c) 80.3% (d) 86.2% (e) 96.8% (iv) What is the generator voltage regulation if the terminal voltage rises to 222.2 V when the load (only) is reduced by 50%? Assume a linear regulation characteristic for the shunt generator (a) 0.5% (b) 1% (c) 2% (d) 5% (e) 10%

3 4 5 Question 2 A 220V, 5.5 kW, DC shunt generator has an armature resistance of 0.2 0 and a total field-circuit resistance of 55 0. The generator is supplying rated current at rated terminal voltage. Answer the following questions relating to this generator: () What is the generator armature current? (a) 17 A (b) 21 A (c) 25 A (d) 29 A (e) 33 A (ii) What is the armature internal voltage Eo? (а) 214.2 V (b) 224.2 V (c) 220.0 V (d) 225.0 V (e) 225.8 V (ii) What is the efficiency of the generator if rotational losses are 300 W? (а) 73.9% (b) 78.2% (c) 80.3% (d) 86.2% (e) 96.8% (iv) What is the generator voltage regulation if the terminal voltage rises to 222.2 V when the load (only) is reduced by 50%? Assume a linear regulation characteristic for the shunt generator (a) 0.5% (b) 1% (c) 2% (d) 5% (e) 10%

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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