Magnetic Circuits and Electromagnetism

UNIT I

Magnetic Circuits and Electromagnetism

Syllabus

Fundamentals of Magnetic circuits- Statically and dynamically induced EMF.

Contents

1.1 Introduction to Magnetic Circuits ........1-2  

1.2 Laws of Magnetism .......                      1-2

1.3 Magnetic Field ............                         1-2

1.4 Magnetic Flux (o) ........                        1-4

1.5 Magnetic Flux Density (B) .........                   1-4   

1.6 Magnetic Field Strength (H)........                   1-4             

1.7 Magnetic Effect of an Electric Current (Electromagnets) ....... 1-4

1.8 Permeability. .... . 1-8 Dec.-10

1.9 Magnetomotive Force (M.M.F.or F) ....... 1 - 9       

1.10 Reluctance (S) ........ 1-9

1.11 Permeance ....................... 1 - 10

1.12 Magnetic Circuits .................. 1 – 10 Dec.-02,10,11,13,17,18,19, May

11,13,14,19, Marks 16

1.13 Comparison of Magnetic and Electric Circuits........ 1-21May-11, Dec.-14, Marks 5

1.14 Magnetic Leakage and Fringing ......... 1 – 22 May-10,15, Marks 13        

1.15 B-H Curve or Magnetization Curve .... 1 – 25 May-10, Dec.-10, Marks 8

1.16 Magnetic Hysteresis. ................ 1 - 26 May-11

1.17 Properties of Magnetic Materials ........ 1 – 28 May-15,16, Marks 8          

1.18 Magnetic Loss [Core Loss or Iron Loss] .... 1 – 30 Dec.-10,12,15, May-11,15,16,19, Marks 16

1.19 Introduction to Electromagnetic Induction . 1 – 35

1.20 Faraday's Experiment.... ....... 1 – 35

1.21 Faraday's Laws of Electromagnetic Induction........... 1 – 36 May-19, Marks 13

1.22 Nature of the Induced E.M.F........... 1 – 37 May-12, Dec.-13,14,15,16,19

1.23 Self Induced E.M.F. ....... ........... 1 - 42 Dec.-06,10,12, May-17, Marks 4  

1.24 Mutually Induced E.M.F. and Mutual Inductance................. 1 – 44 Dec.-12, May-14,17, Marks 13

1.25 Force on a Current Carrying Conductor in a Magnetic Field .....1-29 Dec.-16, Marks 8          

1.26 Energy Stored in the Magnetic Field..... 1 – 51 May-10, Dec.-12, 15, Marks 6

1.27 Two Marks Questions with Answers. .. .. .. 1 – 54