Electrical Machines I

Electrical Machines I - Engineering Subject

Electrical Machines I - EE3303 EM 1 3rd Semester EEE Dept | 2021 Regulation | Anna University Engineering Subject Paper

Unit I: a. Magnetic Circuits and Electromagnetism

1. Magnetic Circuits and Electromagnetism - Electrical Machines

2. Introduction to Magnetic Circuits

3. Laws of Magnetism

4. Magnetic Field

5. Magnetic Flux (ϕ) - Definition, Concept, Formula, Unit

6. Magnetic Flux Density (B) - Definition, Concept, Formula, Unit

7. Magnetic Field Strength (H) - Definition, Concept, Formula, Unit

8. Magnetic Effect of an Electric Current (Electromagnets)

9. Magnetic Field due to Straight Conductor

10. Permeability - Definition, Concept, Formula, Unit

11. Magnetomotive Force (M.M.F.or F) - Definition, Concept, Formula, Unit

12. Reluctance (S) - Definition, Concept, Formula, Unit

13. Magnetic Circuits

14. Comparison of Magnetic and Electric Circuits

15. Magnetic Leakage and Fringing

16. B -H Curve or Magnetization Curve

17. Magnetic Hysteresis - Experimental Set up, Steps, Graph, Theory

18. Properties of Magnetic Materials - Characteristics and Hysteresis Loop

19. Hysteresis and Eddy Current Loss

20. Introduction to Electromagnetic Induction

21. Faraday's Experiment

22. Faraday's Laws of Electromagnetic Induction - First and Second Law with Solved Example Problems

23. Nature of the Induced E.M.F. - Dynamically, Statically

24. Self Induced E.M.F.

25. Mutually Induced E.M.F. and Mutual Inductance

26. Force on a Current Carrying Conductor in a Magnetic Field

27. Energy Stored in the Magnetic Field

28. Two Marks Questions with Answers - Magnetic Circuits and Electromagnetism | Electrical Machines

Unit I: b. Electromechanical Energy Conversion

1. Electromechanical Energy Conversion - Electrical Machines

2. Introduction - Concept of Electromechanical Energy Conversion with Diagram

3. Energy Balance - Equation | Electromechanical Energy Conversion

4. Laws of Electromagnetism

5. Energy Flow in Electromechanical Energy Conversion Device

6. Types of Magnetic System

7. Singly Excited Magnetic System

8. Multiple Excited Magnetic System - with Solved Example Problems

9. Energy Conversion Via Electric Field

10. Advantages of Field Energy Method

11. Three Phase Winding in A.C. Machines - Winding Terminologies, Types

12. M.M.F. of Distributed A.C. Windings

13. Magnetic Field in Rotating Machines (Rotating Magnetic Field)

14. Leakage Fluxes in Rotating Machines

15. Introduction to Indian Standard Specifications (ISS)

16. Two Marks Questions with Answers - Electromechanical Energy Conversion | Electrical Machines

Unit II: D.C. Generators

1. D.C. Generators

2. Introduction - D.C. Generators

3. Principle of Operation of a D.C. Generator

4. Constructional Features of a D.C. Machine

5. Types of Armature Winding - DC Generators

6. Winding Pitches - DC Generators

7. E.M.F. Equation of D.C. Generator - with Solved Example Problems

8. Introduction to Armature Reaction - DC Generators

9. Concept of Armature Reaction - D.C. Generators

10. Demagnetising and Cross Magnetising Conductors - DC Generators

11. Effects of Armature Reaction - DC Generators

12. Reduction of Effects of Armature Reaction - DC Generators

13. Action of Commutator - DC Generators

14. Practical Commutation - DC Generators

15. Methods of Improving Commutation - DC Generators

16. Symbolic Representation of D.C. Generator

17. Methods of Excitation - DC Generators

18. Separately Excited Generator - DC Generators

19. Self Excited Generator - DC Generators

20. Shunt Generator - with Example Problems | DC Generators

21. Series Generator - with Example Problems | DC Generators

22. Compound Generator - with Example Problems | DC Generators

23. Voltage Building in Self Excited Generator - DC Generators

24. Characteristics of D.C. Generators

25. Characteristics of Separately Excited D.C. Generators

26. Load Characteristics of D.C. Shunt Generator

27. Load Characteristics of D.C. Series Generator

28. Load Characteristics of D.C. Compound Generator

29. Applications of Various Types of Generators

30. Critical Field Resistance in D.C. Shunt Generator

31. Necessity of Parallel Operation of Generators - DC Generators

32. Two Marks Questions with Answers - D.C. Generators | Electrical Machines

Unit III: a. D.C. Motors

1. D.C. Motors - Electrical Machines

2. Introduction - D.C. Motors

3. Principle of Operation of a D.C. Motor

4. Direction of Rotation of Motor - Fleming's Left Hand Rule | D.C. Motors

5. Significance of Back E.M.F. - DC Motors

6. Power Equation of a D.C. Motor - Condition for Maximum Power

7. Torque Equation of a D.C. Motor

8. Types of D.C. Motors

9. D.C. Shunt Motor - Voltage and Current Relationship, Solved Example Problems

10. D.C. Series Motor - Voltage and Current Relationship, Solved Example Problems

11. D.C. Compound Motor - Long Shunt, Short Shunt

12. Torque and Speed Equations - Speed Regulation | DC Motors

13. D.C. Motor Characteristics

14. Characteristics of D.C. Shunt Motor

15. Characteristics of D.C. Series Motor

16. Characteristics of D.C. Compound Motor

17. Applications of D.C. Motors

18. Necessity of Starter, Three Point, Four Point Starter - Working Principle, Disadvantage | D.C. Motors

19. D.C. Series Motor Starter

20. Factors Affecting the Speed of a D.C. Motor

21. Speed Control of D.C. Shunt Motor

22. Speed Control of D.C. Series Motor

23. Ward-Leonard System of Speed Control - Advantages and Disadvantages | D.C. Motors

24. Two Marks Questions with Answers - D.C. Motors | Electrical Machines

Unit III: b.Testing of D.C. Machines

1. Testing of D.C. Machines

2. Introduction - Testing of D.C. Machines

3. Losses in a D.C. Machine

4. Efficiencies of a D.C. Machine

5. Testing of D.C. Motors - Direct and Indirect Method

6. Swinburne's Test or No Load Test - Advantages, Disadvantages, Solved Example Problems | Testing of D.C. Machines

7. Brake Test - Advantages, Disadvantages, Solved Example Problems | Testing of D.C. Machines

8. Retardation Test or Running Down Test - Testing of D.C. Machines

9. Hopkinson's Test - Advantages, Disadvantages, Solved Example Problems | Testing of D.C. Machines

10. Field Test - Solved Example Problems | Testing of D.C. Machines

11. Separation of Core Losses - DC Machines

12. Two Marks Questions with Answers - Testing of D.C. Machines | Electrical Machines

Unit IV: Single Phase Transformer

1. Single Phase Transformer - Electrical Machines

2. Introduction - Single Phase Transformer

3. Working Principle of Single Phase Transformer

4. Parts of Transformer

5. Construction of Single Phase Transformers

6. E.M.F. Equation of a Transformer

7. Ideal Transformer on No Load - Single Phase Transformer

8. Practical Transformer on No Load - Single Phase Transformer

9. Transformer on Load (M.M.F. Balancing on Load) - Single Phase Transformer

10. Effect of Winding Resistances - Single Phase Transformer

11. Effect of Leakage Reactances - Single Phase Transformer

12. Equivalent Impedance - Solved Example Problems | Single Phase Transformer

13. Phasor Diagrams for Transformer on Load - Single Phase Transformer

14. Equivalent Circuit of Single Phase Transformer

15. Voltage Regulation of Single Phase Transformer

16. Losses in a Transformer

17. Efficiency of a Transformer - Single Phase Transformer

18. Polarity Test - Single Phase Transformer

19. Open Circuit and Short Circuit Tests - Single Phase Transformer

20. Sumpner's Test (Back to Back Test) - Single Phase Transformer

21. All Day Efficiency of a Transformer - Single Phase Transformer

22. Separation of Core Losses - Single Phase Transformer

23. Parallel Operation of Single Phase Transformer

24. Conditions for Satisfactory Parallel for Operation - Single Phase Transformer

25. Parallel Operation of Two Ideal abrupse Single Phase Transformers

26. Parallel Operation of Transformers with Equal Voltage Ratios - Single Phase Transformer

27. Parallel Operation of Transformers with Unequal Voltage Ratios - Single Phase Transformer

28. Current Inrush Phenomenon ( Switching Transients ) - Single Phase Transformer

29. Applications of Single Phase Transformers

30. Two Marks Questions and Answers - Single Phase Transformer | Electrical Machines

Unit V: Autotransformer and Three Phase Transformer

1. Autotransformer and Three Phase Transformer - Electrical Machines

2. Autotransformer - Construction, Transformation Ratio, Power Transfer, VA Rating, Advantages, Limitations, Applications, Equivalent Circuit, Solved Example Problems

3. Introduction and Advantages of Three Phase Transformer

4. Construction of Three Phase Transformer

5. Three Phase Transformer Connections

6. Voltage and Current Relationships for Different Types of Connections - Three Phase Transformer

7. Conversion from Three Phase to Two Phase (Scott Connection) - Transformer

8. Two Marks Questions with Answers - Autotransformer and Three Phase Transformer | Electrical Machines

Solved model Question Paper

1. Solved model Question Paper - Electrical Machines