Armature Reaction and Regulation of Alternators

UNIT – I

Chapter – 2

Armature Reaction and Regulation of Alternators

Syllabus

Synchronous reactance - Armature reaction. Voltage regulation - EMF, MMF, ZPF and A.S.A methods

Contents

2.1 Introduction

2.2 Parameters of Armature Winding

2.3 Armature Resistance

2.4 Armature Leakage Reactance

2.5 Armature Reaction ….. May-03, 09, 12, 16, Dec.-07,       15, Marks 6

2.6 Concept of Synchronous Reactance and Impedance         …. May-04, 08, Dec.-04, 07, Marks 4

2.7 Equivalent Circuit of an Alternator

2.8 Voltage Equation of an Alternator       ….. Dec.-05, Marks 8

2.9 Phasor Diagram of a Loaded Alternator        ….. Dec.-06, Marks 8

2.10 Voltage Regulation of an Alternator …. Oct.-97, April-01, 04,         ….. May-05, 07,16, Dec.-06,  Marks 10

2.11 Methods of Determining the Regulation       ….. May-05, Dec.-16 Marks 4

2.12 Synchronous Impedance Method or E.M.F. Method.     Oct.-95, 98, 99,    Dec.-04, 06, 07, 12, 14,  May-04, 08, 10,14, Marks 16

2.13 Short Circuit Ratio and Its Significance

2.14 M.M.F. Method of Determining Regulation May-13, 17,18, Dec.-15,16,17 Marks 16

2.15 Potter's Triangle Method or Zero Power Factor (ZPF) Method April-96, 2000, Dec.-06, 08,     May-09, 12, 13,16,17,18 Marks 16

2.16 ASA Modification of M.M.F. Method

2.17 Comparison of Various Methods of Finding Regulation Dec.-04, Marks 8

2.18 Two Marks Questions with Answers

2.19 University Questions with Answers (Long Answered Questions)