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Electrical Machines For Electrical Engineering
Course Content
Course Content (4:53)
Course Slides
Magnetic Circuits
Magnetic Flux, Flux Density, and MMF (20:25)
Magnetic Permeability, Magnetic Intensity, and Reluctance (15:54)
Solved Example 1 (5:45)
Solved Example 2 (9:24)
Fringing Effect in Magnetic Circuits (6:55)
Representation of a Magnetic Circuit (14:41)
Solved Example 3 (10:04)
Solved Example 4 (14:07)
Magnetization Curve and Hysteresis Loop (20:18)
Solved Example 5 (11:06)
Inductance and Flux Linkage (3:49)
Faraday's Law of Induction and Lenz’s Law (20:47)
Basics of Transformers
Introduction to Electrical Transformers (8:59)
Construction and Operation of a Single Phase Transformer (15:28)
Ideal Transformer (9:41)
Phasor Diagram of an Ideal Transformer (6:57)
E.M.F Equation of a Transformer (7:04)
Polarity of Transformer Windings (13:55)
Solved Questions (7:41)
Solved Examples on Ideal Transformer (12:57)
Shifting Impedances in a Transformer (5:42)
Example on Shifting Impedances (13:01)
Transformer Losses (11:37)
Practical Transformer and Exact Equivalent Circuit (11:14)
Approximate Equivalent Circuit (6:47)
Phasor Diagram of a Practical Transformer at No Load (8:18)
Phasor Diagram of a Practical Transformer at Inductive Load (7:47)
Solved Example 1 on Practical Transformers (5:25)
Solved Example 2 on Practical Transformers (2:41)
Solved Example 3 on Practical Transformers (4:18)
Solved Example 4 on Practical Transformers (10:29)
Transformer Voltage Regulation (5:05)
Transformer Efficiency (15:36)
Notes About Transformers (6:15)
Solved Example on Transformer Efficiency (5:51)
Open Circuit Test (11:42)
Short Circuit Test (5:15)
Solved Example on Transformer Parameters (11:27)
Autotransformer (17:11)
Solved Example 1 on Autotransformer (6:32)
Solved Example 2 on Autotransformer (6:07)
Solved Example 3 on Autotransformer (9:02)
Core Type Transformers (22:40)
Shell Type Transformers (12:09)
Comparison Between Shell and Core Type Transformers (9:07)
Three-Phase Transformers
Three-Phase Electrical System (6:39)
Three-Phase Core and Shell Type Transformers (9:10)
Three-Phase or Single-Phase Transformers (5:13)
Three-Phase Transformers Connections (17:37)
Solved Example 1 on Three-Phase Transformers (11:26)
Solved Example 2 on Three-Phase Transformers (9:34)
Vector Group and Nameplate of a Three-Phase Transformer (22:31)
Drawing Connection of Dyn11 of a Three-Phase Transformer (10:50)
Drawing Connection of YNd11 of a Three-Phase Transformer (4:47)
Drawing Connection of Dyn1 of a Three-Phase Transformer (6:26)
K-Factor of a Transformer (10:02)
Per-Unit Impedance of a Transformer (10:10)
Components of Three-Phase Transformers
Construction of Three-Phase Transformer (2:18)
Iron Core of the Transformer (8:45)
Eddy Losses and Saturation Phenomena (7:21)
Windings of the Transformer (6:18)
Types of Transformer Windings (6:35)
Insulating Materials in Transformer (5:06)
Bushings of the Transformer (14:52)
Arching Horn and Surge Arrester (9:54)
Dry and Hermetic Transformers (12:18)
Cooling Fins and Tubes (6:24)
Conservator Transformer (6:08)
Oil Level Gauge and Dehydrating Breather (9:37)
Buchholz Relay (10:25)
Methods of Cooling (9:21)
Tap Changer in Electrical Transformers (17:18)
Explosion Vent (2:32)
Temperature Monitoring and Control Box (6:16)
Power and Distribution Transformers (6:58)
Assembly of a Three-Phase Transformer (2:44)
DC Machine Construction
Principle of Operation of a DC Motor (19:16)
Principle of Operation of a DC Generator (16:03)
Construction of a DC Machine (5:37)
Field Winding of a DC Machine (10:39)
Armature Core and Magnetic Path (10:51)
Commutator and Brushes (8:05)
Armature Windings in a DC Machine
Turn, Coil, and Winding (5:57)
Mechanical and Electrical Angles (11:40)
Pole, Coil, Full, and Short Pitch (3:37)
Single and Double Layer (9:03)
Example 1 (4:02)
Types of Armature Winding (9:16)
Lap Winding (15:06)
Wave Winding (10:03)
Types of Pitch in Windings (28:44)
Dummy Coils and Equalizer Rings (16:54)
Example 2 (16:11)
Example 3 (19:28)
Types of DC Generators
Induced E.M.F Equation (11:55)
Example 1 (2:35)
Example 2 (2:46)
Example 3 (7:57)
Example 4 (3:53)
Types of DC Generators (7:12)
Separately Excited DC Generator (17:42)
Characteristics of a Separately Excited DC Generator (15:17)
Example 5 (7:17)
Example 6 (5:34)
Example 7 (5:50)
Example 8 (4:16)
Shunt DC Generator (17:40)
Characteristics of a Shunt DC Generator (15:11)
Example 9 (3:00)
Example 10 (4:45)
Series Wound DC Generator (10:35)
Efficiency of a DC Generator (14:48)
Example 11 (7:08)
Example 12 (3:56)
Compound Wound DC Generator (18:10)
Example 13 (6:13)
Example 14 (3:19)
Armature Reaction in DC Machines (17:58)
Example 15 (2:35)
Interpoles in DC Machines (12:09)
Types of DC Motors
Shunt DC Motor – Torque-Speed Characteristics (9:46)
Speed Control of the Shunt DC Motor (13:34)
Speed Control Beyond Rated Speed (8:10)
Series DC Motor – Torque-Speed Characteristics (12:06)
Example 1 (8:18)
Example 2 (6:18)
Starting of DC Machines (7:23)
Example 3 (17:57)
Synchronous Machines
Construction And Principle Of Operation Of Synchronous Generator (29:29)
Principle Of Operation Of Synchronous Motor (24:20)
Equivalent Circuit And Phasor Diagram Of Non Salient Synchronous Machine (29:11)
Solved Example 1 On Non Salient Machine (4:37)
Solved Example 2 On Non Salient Machine (10:32)
Solved Example 3 On Non Salient Machine (6:51)
Solved Example 4 On Non Salient Machine (4:00)
Solved Example 5 On Non Salient Machine (7:27)
Solved Example 6 On Non Salient Machine (3:27)
Equivalent Circuit And Phasor Diagram Of Salient Synchronous Machine (38:36)
Solved Example 1 On Salient Machine (9:13)
Solved Example 2 On Salient Machine (5:23)
Solved Example 3 On Salient Machine (9:47)
Parallel Operation Of Two Generators (17:25)
Synchronization Of Machine With Grid (10:15)
Induction Machines
Construction and Theory of Operation of Induction Machines
Equivalent Circuit And Power Flow In Induction Motor (23:26)
Torque-speed Charachteristics Of Induction Motor (19:46)
Solved Example 1 On Induction Motor (7:36)
Solved Example 2 On Induction Motor (6:26)
Solved Example 3 On Induction Motor (6:19)
Solved Example 4 On Induction Motor (18:05)
Solved Example 5 On Induction Motor (13:19)
Methods Of Speed Control Of Induction Motor (27:22)
Methods Of Starting Induction Motor (21:06)
Solved Example On Motor Starter (14:34)
Principle Of Operation Of Doubly Fed Induction Generator
Self Excited Induction Generator (8:19)
Methods Of Speed Control Of Induction Motor
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