Electrical Machines

Special Electrical Machines is a free Electrical Engineering handbook covering important course topics, detailed notes, diagrams, equations, formulas and study materials. Download this digital book and reference guide for ITI, Diploma, BE, BTech and other engineering degree courses.

Explore 91 topics across 5 chapters on AC machines, induction motors, motor torque and slip, equivalent circuits, motor starting, speed control, single-phase motors, universal motors and alternators. Useful for university exams, GATE revision, viva, interviews, assignments, projects and quick reference.

RELATED ENGINEERING BRANCHES
Electrical Engineering, Electrical and Electronics Engineering (EEE), Power Engineering, Electronics Engineering, Instrumentation and Control Engineering, and Mechatronics.

58 UNIQUE LISTED TOPICS FROM 91

AC MACHINES & INDUCTION MOTOR BASICS
1. Polyphase AC Machines
2. Classification of AC Motors
3. Construction of AC Motors
4. Phase-Wound Rotor
5. Production of Rotating Field
6. Three-Phase Supply
7. Relation Between Torque and Rotor Power Factor
8. Starting Torque of Induction Motors
9. Torque, Rotor EMF and Reactance Under Running Conditions
10. Condition for Maximum Running Torque
11. Relation Between Torque and Slip
12. Full-Load, Starting and Maximum Torque
13. Torque-Speed Curve
14. Current-Speed Curve of an Induction Motor

MOTOR PERFORMANCE & EQUIVALENT CIRCUITS
15. Plugging of an Induction Motor
16. Complete Torque-Speed Curve of a Three-Phase Machine
17. Measurement of Slip
18. Power Stages in an Induction Motor
19. Torque, Mechanical Power and Rotor Output
20. Induction Motor Torque Equation
21. Analogy with Mechanical Clutch and DC Motor
22. Sector Induction Motor
23. Magnetic Levitation
24. Induction Motor as a Generalized Transformer
25. Equivalent Circuit of Rotor and Induction Motor
26. Power Balance Equations
27. Circle Diagram for a Series Circuit
28. Circle Diagram for the Approximate Equivalent Circuit
29. Determination of G0 and B0
30. Blocked Rotor Test
31. Construction of the Circle Diagram

MOTOR STARTING, SPEED CONTROL & TYPES
32. Starting of Induction Motors
33. Starting of Slip-Ring Motors
34. Starter Steps
35. Crawling and Cogging (Magnetic Locking)
36. Double Squirrel-Cage Motor
37. Speed Control of Induction Motors
38. Three-Phase AC Commutator Motors
39. Standard Types of Squirrel-Cage Motors

SINGLE-PHASE & SPECIAL MOTORS
40. Types of Single-Phase Motors
41. Single-Phase Induction Motor
42. Double-Field Revolving Theory
43. Making Single-Phase Induction Motors Self-Starting
44. Equivalent Circuit of Single-Phase Induction Motor Without Core Loss
45. Types of Capacitor-Start Motors
46. Capacitor Start-and-Run Motor
47. Shaded-Pole Single-Phase Motor
48. Repulsion-Type Motors
49. Repulsion Principle
50. Compensated Repulsion Motor
51. AC Series Motors
52. Universal Motor
53. Speed Control of Universal Motors
54. Unexcited Single-Phase Synchronous Motors

ALTERNATORS & WINDINGS
55. Basic Principle and Stationary Armature of Alternators
56. Construction Details
57. Damper Windings, Speed and Frequency
58. Armature Windings: Concentric, Chain and Two-Layer Windings

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• Important material for exams and technical interviews

Study Special Electrical Machines as a free course companion for motor theory, machine performance and practical electrical engineering concepts.

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