Electric Transmission of Energy and Its Transformation, Subdivision, and Distribution: A Practical HandbookWhittaker & Company, 1886 - 331 páginas |
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Página 47
... Unit . · • Ampere · · Volt . · Ohm Quantity of electricity Capacity • Equivalent c . g . s . Unit . 10-1 · 108 · 109 · · 10- 10-9 • · 10-15 Coulomb S Farad Microfarad CHAPTER II . First Electro - motor - Professor Forbes.
... Unit . · • Ampere · · Volt . · Ohm Quantity of electricity Capacity • Equivalent c . g . s . Unit . 10-1 · 108 · 109 · · 10- 10-9 • · 10-15 Coulomb S Farad Microfarad CHAPTER II . First Electro - motor - Professor Forbes.
Página 52
... Volts . According to the inventor , an arma- ture four feet in diameter by four feet in length would produce an electro - motive force of sixty Volts when driven at a speed of 1,000 revolutions a minute . If we were to allow the current ...
... Volts . According to the inventor , an arma- ture four feet in diameter by four feet in length would produce an electro - motive force of sixty Volts when driven at a speed of 1,000 revolutions a minute . If we were to allow the current ...
Página 80
... measure , and to obtain it in volts the right side of the equation must be multiplied with 10 -3 . We can also write 2 Ea a = 6000 Ntn 10- , ELECTRO - MOTIVE FORCE IN ARMATURE . 81 and if 80 ELECTRIC TRANSMISSION OF ENERGY ,
... measure , and to obtain it in volts the right side of the equation must be multiplied with 10 -3 . We can also write 2 Ea a = 6000 Ntn 10- , ELECTRO - MOTIVE FORCE IN ARMATURE . 81 and if 80 ELECTRIC TRANSMISSION OF ENERGY ,
Página 93
... volts , and Ca the current in amperes , then the number of English horse - powers which could be obtained from it , if there were no losses , is H - P = Ea Ca 746 • 12 ) . Retaining the notation of equations 5 ) and 6 ) , we have also 1 ...
... volts , and Ca the current in amperes , then the number of English horse - powers which could be obtained from it , if there were no losses , is H - P = Ea Ca 746 • 12 ) . Retaining the notation of equations 5 ) and 6 ) , we have also 1 ...
Página 113
... Volts 100 , 90 80 70 60 50 40 30 20 10 Revs . CHI 10 20 Fig . 55 . 2HP Ea 7HP 6HP 5HP 4HP 3HP Et 30 40 50 60 70 Amperes CHARACTERISTICS OF SIEMENS DYNAMO . The latter is obtained from the former by adding to its ordinates the internal ...
... Volts 100 , 90 80 70 60 50 40 30 20 10 Revs . CHI 10 20 Fig . 55 . 2HP Ea 7HP 6HP 5HP 4HP 3HP Et 30 40 50 60 70 Amperes CHARACTERISTICS OF SIEMENS DYNAMO . The latter is obtained from the former by adding to its ordinates the internal ...
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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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