Electric Transmission of Energy and Its Transformation, Subdivision, and Distribution: A Practical HandbookWhittaker & Company, 1886 - 331 páginas |
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Página vii
... actually carried out . He has endeavoured in this way to place before the reader an unbiassed report on the present state of electric transmission of energy . May , 1886 . CONTENTS . Introductory PAGE 1-8 CHAPTER I. General Principles -
... actually carried out . He has endeavoured in this way to place before the reader an unbiassed report on the present state of electric transmission of energy . May , 1886 . CONTENTS . Introductory PAGE 1-8 CHAPTER I. General Principles -
Página 24
... present we have only dealt with magnets and the mechanical forces exerted by them . It will now be necessary to investigate the relations between an electric current and the mechanical force it can exert when Fig . 5 . brought into a ...
... present we have only dealt with magnets and the mechanical forces exerted by them . It will now be necessary to investigate the relations between an electric current and the mechanical force it can exert when Fig . 5 . brought into a ...
Página 31
... presents itself is the determination of the electrical energy of a current , c , flowing under a difference of potential of F. d . v . We have up to the present used the term potential without giving its definition . As the name implies ...
... presents itself is the determination of the electrical energy of a current , c , flowing under a difference of potential of F. d . v . We have up to the present used the term potential without giving its definition . As the name implies ...
Página 37
... present it will be more convenient to re- tain the symbol e , and we write , E - e W = e . r Since e = F d v , and P = c F d , we have the relation , се P = = = v from which it will be seen that with a constant speed and with a constant ...
... present it will be more convenient to re- tain the symbol e , and we write , E - e W = e . r Since e = F d v , and P = c F d , we have the relation , се P = = = v from which it will be seen that with a constant speed and with a constant ...
Página 61
... present day , having been replaced by more perfect forms to be de- scribed presently ; but they are still extensively employed for small electro - motors . By referring to Fig . 15 it will be seen that the counter - electro - motive ...
... present day , having been replaced by more perfect forms to be de- scribed presently ; but they are still extensively employed for small electro - motors . By referring to Fig . 15 it will be seen that the counter - electro - motive ...
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Términos y frases comunes
amperes armature core arrangement battery brake brushes cable capital outlay cent chapter commercial efficiency commutator conductor connected constant speed cost counter-electro-motive force Creil curve cylinder dead points diameter distance dynamos and motors electric transmission electrical efficiency electrical energy electrical resistance electro-motive force employed engine equal equation exciting power experiments external field magnets flow formula friction Gramme dynamo Gramme machine greater heat horse-shoe hydraulic inches increase insulation iron latter length lines of force load loss machine magnet pole magnetic field magnetic resistance Marcel Deprez maximum mechanical energy motive force number of lines obtained ohms parallel placed pole pieces position practical pressure produced proportional represent revolutions a minute rheostat right angles self-induction self-regulating series-wound shown in Fig shunt coils slider spindle steam-engine steel strength tion total number trans transmission of energy transmitted volts weight whilst wound وو
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Página 209 - ... filled with paper, wood shavings, or other protective material that prevent the articles from moving about or coming in contact with each other or with the sides of the box In course of transmission. (2) Liquids, oils, etc. Liquids, oils, and substances which easily liquefy must be enclosed in hermetically sealed receptacles. Each receptacle must be placed in a separate box of metal, strong wood, or strong corrugated...
Página 210 - Now, if we have a single pair of cables, one of them connected to the positive and the other to the negative terminal of the...