# Electrical Machine 1

Electric Machine I Bachelor of Engineering(BE) videos According to syllabus of Institute of Engineering(IoE), Tribhuvan University (TU)

Advanced 5 (1 Reviews ) 67 Students enrolled
Created by Mero School Last updated Tue, 07-Sep-2021 Nepali
What will I learn?
• After Completion of this Course, Students will get complete knowledge of Electric Machine I, based on syllabus of IoE and will be able to secure good score in IoE exam.

Curriculum for this course
76 Lessons 24:52:23 H:M:S
1 . Introduction to Course
1 Lessons 00:02:59 H:M:S
• Introduction to Machine I 00:02:59 Free
• 1. Magnetic circuits and its types 00:33:05 Free
• 2.B-H relationship and Hystereisis with DC excitation 00:26:33 Free
• 3.Hysteresis with AC excitation - Hysteresis loss and Eddy current loss 00:17:09
• 4.Faraday's Law of electromagnetic induction , statically and Dynamically induced EMF 00:11:03
• 5.Force on current carrying conductor - Expression for self Inductance 00:10:03
• 6.Numerical 1 (2076 Baisakh) 00:18:32
• 7.Numerical 2 (flux calculation in the core having multiple windings 00:15:30
• 8.Numerical 3 (Parallel magnetic circuit) 00:20:20
• 9.Numerical 4 (2069 - ring related) 00:08:31
• 10.Numerical 5 (2073 Magh - ring related) 00:12:05
• 11.Numerical 6 (2069 Bhadra- self inductance) 00:06:32
• 1.Construction, Operating Principle and EMF equation of single phase transformer 00:21:49
• 2.Mutual Inductance and Coupled circuit model 00:07:03
• 4.Equivalent circuit diagram of transformer (Detail) 00:32:39
• 5.Capacity of Transformer - Exciting current harmonics - Transformer inrush current 00:14:15
• 6.Transformer testing (Polarity test) 00:07:32
• 7. Transformer testing ( No Load or Open Circuit test ) 00:23:22
• 8. Transformer testing (Short circuit test) 00:23:22
• 9. Voltage Regulation 00:27:43
• 10. Losses , Efficiency and condition for maximum efficiency in a transformer 00:20:13
• 11.Instrument transformer (current transformer & potential transformer) 00:15:35
• 12. Auto transformer (Construction , working principle & Cu saving) 00:17:18
• 13. Three phase transformer (Introduction) 00:15:46
• 14. Three phase transformer connections (Detail) 00:36:02
• 15.Three phase to two phase conversion (Scott connection) - Three winding transformer 00:16:03
• 16.Parallel operation of single phase and three phase transformer 00:35:35
• 17. Numerical 1 (2076 Baisakh - step up transformer testing 00:30:52
• 18.Numerical 2 (2072 magh - step down transformer testing) 00:27:16
• 19. Numerical 3 (2073 Bhadra - efficiency related) 00:12:41
• 20.Numerical 4 (2073 Magh - efficiency related) 00:07:10
• 21. Numerical 5 (2071 Magh - efficiency related) 00:13:06
• 22. Numerical 6 (2070 magh) 00:09:26
• 23. Numerical 7 (2069 bhadra - efficiency related) 00:20:06
• 24. Numerical 8 (2072 Ashwin - three phase) 00:21:15
• 25. Numerical 9 (2070 Magh - three phase) 00:18:51
• 26. Numerical 10 (2069 Poush - three phase) 00:15:00
• 1. Constructional details of DC machine and Armature Windings 00:14:18
• 2. Operating principle and EMF equation of DC generator 00:35:46
• 3. Method of Excitation and Types of DC generator 00:21:34
• 4. Characteristics of series, shunt and compound generator 00:21:56
• 5. Voltage build up process in DC generator 00:19:07
• 6. Armature Rxn in DC generator and methods to reduce Armature Rxn 00:13:57
• 7. Losses , efficiency and voltage regulation in DC generator 00:03:29
• 8. Numerical 1 (2076 Baisakh - short shunt and long shunt compound dc generator) 00:54:11
• 9. Numerical 2 (2075 Bhadra - dc shunt generator) 00:20:56
• 1. Operating principle and Torque equation of DC motor 00:48:07
• 2. Back EMF and its role in DC motor 00:15:23
• 3. Types of DC motor and Performance characteristics of DC motor 00:38:17
• 4. starting of DC motors ( 3 point and 4 point starters) 00:24:59
• 5. Speed control of DC shunt motor 00:28:01
• 6. Speed control of DC series motor 00:23:46
• 7. Numerical 1 (2076 Baisakh - dc shunt motor) 00:23:05
• 8. Numerical 2 (2075 Bhadra - dc shunt motor) 00:17:06
• 9. Numerical 3 (2073 Magh - dc shunt motor) 00:14:52
• 10. Numerical 4 (2075 Baisakh - dc series motor) 00:11:55
• 11. Numerical 5 (2066 Magh - dc series motor) 00:13:56
• 1. Construction and Operating principle of three phase induction motor 00:34:33
• 2. Torque equation of three phase induction motor at standstill and running condition 00:21:22
• 3. Torque slip characteristics , condition for max. torque & effect of rotor resistance on torque slip characteristics 00:28:14
• 4. Testing of induction motor( no load test and blocked rotor test) 00:25:23
• 5. Losses , power stages and efficiency of three phase induction motor 00:16:50
• 6. Starting methods of three phase induction motor 00:24:11
• 7. Speed control methods for three phase induction motor and Double cage Induction motor 00:11:25
• 8. Working principle , Voltage build up in an induction generator 00:28:17
• 9.Power stage diagram of induction generator 00:05:53
• 10. Isolated and grid connected mode of operation of three phase induction generator 00:23:40
• 11. Numerical 1 (2074 Bhadra - efficiency related) 00:14:56
• 12. Numerical 2 (2073 Bhadra) 00:21:33
• 13. Numerical 3 (2076 Baisakh - Torque related) 00:17:09
• 14. Numerical 4 (2075 Bhadra - Torque related) 00:14:38
• 15. Numerical 5 (2072 Magh- Torque related) 00:15:21
• 16. Numerical 6 (2072 Ashwin - Torque related) 00:12:07
• 17. Numerical 7 (Testing of induction motor related) 00:20:04
• Requirements
• Students are required to have knowledge of knowledge of Electric Machine , based on syllabus of IoE
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Description

The videos herein are strictly based on syllabus of Institute of Engineering Tribhuvan University, Nepal promoting e-Learning in Nepal and are made with intention to provide guidance to the Bachelor in Engineering(BE) appearing students , for securing good results. The course tries to cover all the basics of Magnetic Circuit & Induction, Transformer, DC Machines and Induction Machines with solution of most frequently asked questions in final exam of BE with fundamental theories and numerical solutions. We strongly believe that, viewers will be benefited from these videos and the thrist of curiosity of viewers will be quenched! Feedbacks and suggestion to improve are always welcome and highly appreciated!

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• 24:52:23 On demand videos
• 76 Lessons
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