Introduction to Electrical Engineering |
From inside the book
Results 1-3 of 38
Page 196
... core made of this steel for a frequency of 500 cycles per sec and a flux density of 100 kilolines per sq in . The volume of the core is 107 cu in . ( 7 - VIII ) The eddy - current loss in a sample of sheet steel is 12 w at a fre- quency ...
... core made of this steel for a frequency of 500 cycles per sec and a flux density of 100 kilolines per sq in . The volume of the core is 107 cu in . ( 7 - VIII ) The eddy - current loss in a sample of sheet steel is 12 w at a fre- quency ...
Page 201
... core of each of the following changes : ( a ) doubling the frequency , ( b ) rebuilding the core using laminations half as thick , ( c ) rebuilding the core using lamina- tion material of twice the resistivity ? 10. What reason , other ...
... core of each of the following changes : ( a ) doubling the frequency , ( b ) rebuilding the core using laminations half as thick , ( c ) rebuilding the core using lamina- tion material of twice the resistivity ? 10. What reason , other ...
Page 225
... core of the type shown in Fig . 9.14 : la LB Α . = = = lc 8 in . = 20 in . = Ac = 4 sq in . Material : annealed sheet - steel laminations . AB = 1.5 sq in . What mmf FA will be Core wound on leg A instead of leg B. required to establish ...
... core of the type shown in Fig . 9.14 : la LB Α . = = = lc 8 in . = 20 in . = Ac = 4 sq in . Material : annealed sheet - steel laminations . AB = 1.5 sq in . What mmf FA will be Core wound on leg A instead of leg B. required to establish ...
Contents
The place of electricity and magnetism in engineering | 1 |
Some remarks on energy | 7 |
FUNDAMENTAL ELECTRICAL CONCEPTS AND UNITS | 16 |
Copyright | |
109 other sections not shown
Other editions - View all
Common terms and phrases
air gap alternating ampere-turns applied assume atoms battery becomes Calculate called capacitance capacitor carrying cause cell charge coil conductivity conductor connected constant copper core coulomb curve cycles decrease defining depends designated determine dielectric difference direction effect electric field intensity electric flux electromotive force electrons energy equal Equation established EXAMPLE expression flow flux density follows frequency given gives heat increase induced insulation ions iron kilolines known length lines load loss magnetic circuit magnetic field magnetic flux density material means measured metal meter molecules moving negative obtain ohms operate parallel path placed plate positive possible potential potential difference practical Problems produced quantity resistance result showing shown in Fig solution space surface temperature terminals tube turns unit varies voltage drop weber wire zero