Electrical Machines

Front Cover
Technical Publications, Jan 1, 2009 - 534 pages
6 Reviews
TransformersConstruction, Polarity test, Sumpner's test, All day efficiency.Autotransformer Volt-amp relation, Efficiency, Advantages and disadvantages and applications, Three-phase transformers : Connections, Three-phase bank of single phase transformers, Scott connections, Instrument transformers.D.C. MachinesD.C. Machine : Construction, emf and torque equations. Armature reaction, Commutation, Performance characteristics of motors and generators, Starting of motors, Speed control, Losses and efficiency.Three Phase Induction MotorConstruction, Rotating magnetic field and Principle of operation, Equivalent circuit, Torque production, Torque-slip characteristics, Speed control, Starting of squirrel cage and Slip ring induction motors.Three Phase Synchronous MachinesAlternator : Construction, EMF equation and effects of pitch and distribution factors, Phasor diagram, Armature reaction, Voltage regulation and its determination by synchronous impedance method, Methods of synchronization.Synchronous Motor : Principle of operation and starting torque and mechanical power developed, Effect of excitation on line current, (V-curves).Fractional H.P. MotorsSingle phase induction motor : Construction, Revolving field theory and principle of operation, equivalent circuit and starting methods. Two-phase servo-motor, Stepper motor, and their applications.Industrial ApplicationsConcept of braking in dc and ac motors, Two quadrant and four quadrant operation of dc and three phase induction motors, Industrial applications of dc and ac motors.
 

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nice ,,,exllent

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good book

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Contents

C Motors 41 to 4 66
1-66
Chapter2 Three Phase and instrument Transformers 21 to 240
2-2
C Generators 31 to 362
2-3
Review Questions 239
2-39
Table of Contents
3-1
Examples with Solutions 4 54
4-54
University Examples with Solutions 4 61
4-61
C Motors 41 to 4 66
4-66
Chapter6 Alternator 61 to 6 64
6-1
Chapter6 Alternator 61 to 6 64
6-6
Chapter7 Synchronous Motors 7 1 to 7
7-1
Chapter8 Fractional Horse Power Motors 81 to 836
8-1
Chapter7 Synchronous Motors 71 to 7 36
8-7
Chapter9 Industrial Applications 91 to 9 24
9-9
Chapterwise University Questions with Answer P1toP16
P-16
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