Electrical Machines I [EEE Department]

Electrical Machines I [EEE Department]

Electrical Machines I

MAGNETIC CIRCUITS AND MAGNETIC MATERIALS

1. Magnetic Circuits and Magnetic Materials
2. Laws Governing Magnetic Circuits
3. Flux Linkage, Inductance and Energy
4. Statically and Dynamically Induced Emf
5. Properties of Magnetic Materials
6. Iron or Core losses
7. AC Operation of Magnetic Circuits
8. Transformer as a Magnetically Coupled Circuit
9. Solved problems - Magnetic Circuits and Magnetic Materials
10. Important Short Questions and Answers : Electrical machines - Magnetic Circuits and Magnetic Materials

TRANSFORMERS

1. Transformer: Principle of Operation
2. An ideal Transformer: Principle of Operation
3. Induction Law - Transformer
4. Equivalent Circuit of Transformer
5. Transformer Losses
6. Transformer Tests
7. Efficiency of a Transformer
8. Voltage Regulation of Transformer
9. Auto Transformer
10. Three-phase autotransformer connection
11. Parallel Operation of Transformers
12. Tap Changing in Transformer
13. Solved Problems - Transformer - Electrical machines
14. Important Short Questions and Answers: Electrical machines - Transformer

ELECTROMECHANICAL ENERGY CONVERSION AND CONCEPTS IN ROTATING MACHINES

1. Energy In Magnetic Systems
2. The Field Energy
3. The Co Energy
4. Force In A Singly Excited Magnetic Field System
5. Force in a Multiply Excited Magnetic Field System
6. Mmf of Distributed Windings
7. Magnetic Fields In Rotating Machines
8. Rotating Mmf Waves
9. Torque in Ac And Dc Machines
10. Solved Problems - Electromechanical Energy Conversion and Concepts in Rotating Machines
11. Important Short Questions and Answers - Electromechanical Energy Conversion and Concepts in Rotating Machines

DC GENERATORS

1. Construction of DC Machines
2. Lap Winding
3. Wave Winding
4. EMF Equation of DC Generators
5. Armature reaction
6. Methods of excitation of the field windings
7. Methods of Excitation used for DC Generator
8. Commutation and Interpoles
9. DC Generator Characteristics
10. Important short questions and answers: DC Generators

DC MOTORS

1. Principle of operation of a D.C. Motor
2. Working of D.C. Motor
3. Types of DC Motors
4. DC Motor Characteristics
5. Speed Control of DC Shunt Motor: Varying Armature Resistance, Field Resistance
6. Starting of DC Motors
7. Three Point Starter: Working principle
8. Four Point Starter
9. Swinburne�s Test
10. Hopkinson�s test: Procedure, Calculation of efficiency, Advantages, Disadvantages
11. Braking of DC shunt motor
12. Important Short questions and answers: DC Motor - Electrical machines