TY  - BOOK
AU  - Bali,S.P.
TI  - Electrical Technology, Vol2: Machines and Measurements
SN  - 9789332517943
U1  - 621.3 23
KW  - Electronic books
N1  - Cover -- Dedication -- Preface -- Contents -- Part B: Electric Machines -- Chapter 31: Electromechanical Energy Conversion -- 31.1 Introduction -- 31.2 Energy Conversion Devices -- 31.3 Related Fundamental Laws -- 31.3.1 Faraday's Law of Induction -- 31.4 D.c. Motor and Generator Mechanical Construction -- 31.5 Elementary Generator -- 31.6 Average e.m.f. Generated in a Quarter Revolution -- 31.7 Fundamental d.c. Generator Equation for Average e.m.f. Between Brushes -- 31.8 Biot-Savart Relationship -- 31.8.1 Motor Action -- 31.8.2 Elementary Two-Pole Motor -- 31.8.3 Magnitude of the Mechanical Force -- 31.8.4 Developed Torque -- 31.8.5 Left-Hand Rule of Motor Action -- 31.9 Motor Action Versus Generator Action -- 31.10 Power Flow Diagrams -- 31.10.1 Generator Power Flow -- 31.10.2 Motor Power Flow -- 31.11 Conversion Process in a Machine -- 31.12 Linear and Rotary Motion -- 31.13 Methods of Analysis -- 31.14 Energy Balance -- 31.15 Rotary Motion -- 31.16 Doubly Excited Rotating Machines -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 32: D.c. Generators -- 32.1 Introduction -- 32.2 Mechanical Construction -- 32.3 Armature Structure -- 32.4 Commutator and Brushes -- 32.5 Armature Windings -- 32.5.1 Lap Windings -- 32.5.2 Wave Windings -- 32.5.3 Lap and Wave Winding-A Comparison -- 32.5.4 Paths in Lap-Wound and Wave-Wound Armatures -- 32.6 Commutation -- 32.7 Armature Reaction -- 32.7.1 Correcting Armature Reaction Effect -- 32.8 E.M.F. Equation -- 32.9 Separately Excited Generator -- 32.10 Basic Generator Types -- 32.11 Schematic Diagram and Equivalent Circuit -- 32.11.1 Shunt Generator -- 32.11.2 Series Generator -- 32.11.3 Compound Generator -- 32.12 Characteristics of d.c. Generators -- 32.12.1 Separately Excited Generators -- 32.12.2 Shunt Generator -- 32.12.3 Series Generator -- 32.13 Generator Losses; 32.14 Polarity of Brushes -- 32.15 Voltage Regulation -- 32.16 Paralleling of Generators -- 32.16.1 Parallel d.c. Generator Requirements -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 33: D.c. Motors -- 33.1 Introduction -- 33.2 Development and Measurement of Torque -- 33.3 Prony Brake -- 33.4 Two-Scale Prony Brake -- 33.5 Dynamometer -- 33.6 Back Electromotive Force in a Motor -- 33.7 Classification of Motors -- 33.8 Construction -- 33.9 Characteristics of d.c. Motors -- 33.9.1 Shunt Motors -- 33.9.2 Shunt Motor Speed Characteristics -- 33.9.3 Shunt Motor Torque Characteristics -- 33.9.4 Series Motors -- 33.9.5 Series Motor Speed Characteristics -- 33.9.6 Series Motor Torque Characteristics -- 33.9.7 Compound Motors -- 33.9.8 Compound Motor Speed Characteristics -- 33.9.9 Compound Motor Torque Characteristics -- 33.10 Relation between Torque and Speed of a Motor -- 33.10.1 Torque Versus Speed -- 33.11 Direct-Current, Motor Starting Problems -- 33.12 D.c. Starting Switch -- 33.13 D.c. Motor Reversing -- 33.13.1 D.c., Motor Reversing Circuit Connections -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 34: Efficiency of Direct Current Machinery -- 34.1 Introduction -- 34.2 Basic Efficiency Relationships -- 34.3 Types of Losses in d.c. Machines -- 34.3.1 Rotational Losses -- 34.3.2. Winding Resistance Losses -- 34.3.3 Shunt Field Loss -- 34.3.4 Relationships Between Losses -- 34.4 Motor Enclosures -- 34.5 Maintenance and Accessibility -- 34.6 Cooling and Ventilation -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 35: D.c. Motor Control -- 35.1 Introduction -- 35.2 Control Devices -- 35.3 Pilot Control Devices -- 35.4 Manual d.c. Motor Starters -- 35.4.1 Two-point Starter -- 35.4.2 Three-point Starter -- 35.4.3 Four-point Starter; 35.4.4 Drum Rotary Switch Starter -- 35.4.5 Direct-current Three-point Starter Circuit -- 35.5 Automatic Direct-Current Motor Starters -- 35.6 Comparison of Manual Versus Automatic Starter -- 35.7 Reversing Control of Direct Current Motors -- 35.7.1 Manual Reverse Control -- 35.7.2 Reversing Requirement Considerations -- 35.8 Retardation and Stopping -- 35.8.1 Electric Brakes -- 35.8.2 Jogging -- 35.9 Ward-Leonard System -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 36: Transformers - Single Phase -- 36.1 Introduction -- 36.2 Mutual Coupling -- 36.3 Series Connection of Mutually-Coupled Coils -- 36.4 Parallel Connection of Mutually Coupled Coils -- 36.5 The Dot Convention -- 36.6 Preventing Mutual Inducance -- 36.7 Transformer -- 36.8 Transformer Construction -- 36.9 Ideal Transformer -- 36.10 Transformation Ratio -- 36.11 General Transformer Equation -- 36.12 Practical Transformer -- 36.13 Transformer Ratings -- 36.14 Transformer Equivalent Circuits -- 36.14.1 Reflected Impedance -- 36.14.2 Impedance Matching -- 36.l4.3 The Three Winding Transformer as an Impedance Matching Device -- 36.14.4 Tapped Matching Transformers -- 36.14.5 Equivalent Circuits -- 36.15 Secondary Voltage Phasor Relations -- 36.15.1 Unity Power Factor Voltage Relations -- 36.15.2 Lagging Power Factor Voltage Relations -- 36.15.3 Leading Power Factor -- 36.16 Transformer Voltage Regulation -- 36.17 Maximum Power Transfer -- 36.18 Losses in Transformers -- 36.19 Short Circuit Test -- 36.20 Open Circuit Test -- 36.21 Transformer Efficiency -- 36.22 Autotransformer -- 36.22.1 Variable Autotransformers -- 36.22.2 Autotransformer Power Division -- 36.23 Power Transformers -- 36.23.1 Parts of a Transformer -- 36.24 Instrument Transformers -- 36.24.1 Potential Transformers -- 36.24.2 Current Transformer -- 36.25 Pulse Transformers; 36.26 Transformer Connections -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 37: Three-Phase Transformers -- 37.1 Introduction -- 37.2 Three-phase Connections of Single-phase Transformers -- 37.3 Three-phase Transformers -- 37.4 Paralleling Three-phase Transformer Banks -- 37.5 Harmonic Suppression in Three-phase Connections -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 38: Synchronous Generators - Alternators -- 38.1 Introduction -- 38.2 Physical Construction of d.c. Machines -- 38.2.1 Fixed Armature or Stator -- 38.2.2 Rotating Field Structure -- 38.3 Alternator Windings -- 38.3.1 Chording of Windings -- 38.3.2 Coil Group Connections -- 38.3.3 Winding Distribution -- 38.4 Synchronous Alternator -- 38.5 Stator Windings -- 38.5.1. Single-layer Winding -- 38.5.2. Double-layer Winding -- 38.5.3 Winding Pitch -- 38.6 Distribution Factor -- 38.7 Basic Voltage Generation Formula -- 38.8 Alternator Performance -- 38.9 Alternator Percentage Regulation -- 38.10 Relation between Generated Voltage and Terminal Voltage of an Alternator at Various Load Power Factor -- 38.10.1 Unity Power Factor Loads -- 38.10.2 Lagging Power Factor Loads -- 38.10.3 Leading Power Factor Loads -- 38.10.4 Voltage Regulation at Various Power Factors -- 38.10.5 A.C. Generators: A Comparison -- 38.10.6 Load Power Factor -- 38.10.7 Winding Resistance -- 38.10.8 Synchronous Impedance -- 38.10.9 The Open-circuit Test and The Short-circuit Test -- 38.11 Equivalent Circuit -- 38.12 Parallel Operation -- 38.12.1 Parallel Voltage Requirements -- 38.12.2 Phase Sequence Considerations -- 38.12.3 Identical Frequency Requirement -- 38.12.4 Prime-Mover Torque Speed Relation -- 38.13 Alternator Synchronizing Procedure -- 38.13.1 Voltage Matching -- 38.13.2 Phase Sequence Matching -- 38.13.3 In-Phase Determination; 38.13.4 Frequency Synchronization -- 38.13.5 Synchroscope Synchronization -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 39: Synchronous Motors -- 39.1 Introduction -- 39.2 General -- 39.3 Synchronous Motor Construction -- 39.4 Synchronous Motor Operation -- 39.5 Starting Synchronous Motors -- 39.5.1 Starting a Synchronous Motor as an Induction Motor by Means of its Damper Windings -- 39.6 Synchronous Motor Power Factor Control -- 39.7 Synchronous Motor V Curve -- 39.8 Synchronous Capacitors -- 39.8.1 Power Factor Correction Advantages -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 40: Induction Motors (Three Phase) -- 40.1 Introduction -- 40.2 The Rotating Magnetic Field -- 40.3 Speed of the Rotating Magnetic Field -- 40.4 Direction of Rotation -- 40.5 Slip and its Effect on Rotor Frequency and Voltage -- 40.5.1 Effect of Slip on Rotor Frequency -- 40.5.2 Effect of Slip on Rotor Voltage -- 40.6 Construction of a Three-phase Induction Motor -- 40.7 Rotor Impedance and Current -- 40.8 Locus of the Current -- 40.9 Losses and Efficiency -- 40.10 Air Gap Power -- 40.11 Maximum Torque -- 40.12 Induction Motor Torque-Speed Characteristics -- 40.13 Wrim and Scim: A Comparison -- 40.14 Starting Techniques for Induction Motors -- 40.15 Determination of Induction Motor Parameters -- 40.15.1 D.c. Test -- 40.15.2 No-load Test -- 40.15.3 Blocked-Rotor Test -- Summary -- Multiple Choice Questions (MCQ) -- Conventional Questions (CQ) -- Chapter 41: Induction Motors (Single Phase) -- 41.1 Introduction -- 41.2 Classes of Induction Motors -- 41.3 Getting the Rotor Started -- 41.4 Construction -- 41.5 Phase Splitting -- 41.6 Locked-Rotor Torque -- 41.7 Resistance-Start Split-Phase Motors -- 41.8 Capacitor-Start Split-Phase Motors -- 41.8.1 Permanent-split Capacitor Motors; 41.8.2 Two-value Capacitor Motor
N2  - Electrical Technology: Machines and Measurements is the second volume of the book on Electrical Technology and all undergraduate students of electrical and electronics engineering shall find this indispensible. Divided into two parts consisting of twenty-four chapters, this book covers electric machines which includes AC and DC machines, various electrical instruments and measurements. The concepts are clearly explained and are supplemented with relevant examples in every chapter
UR  - https://ebookcentral.proquest.com/lib/cethalassery/detail.action?docID=5124907
ER  -