Electric Transmission of Energy and Its Transformation, Subdivision, and Distribution: A Practical HandbookWhittaker & Company, 1886 - 331 páginas |
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Página 121
... load in- creases resistance is switched out so as to regulate the speed . At best this is a clumsy device , requiring personal attention , and not very efficient , as with it variations in speed can never be altogether avoided . It is ...
... load in- creases resistance is switched out so as to regulate the speed . At best this is a clumsy device , requiring personal attention , and not very efficient , as with it variations in speed can never be altogether avoided . It is ...
Página 131
... load the motor that its counter - electro - motive force e = H L , it will work with maximum commercial efficiency . The energy obtained at the motor spindle is represented by the area of the rectangle G F M T , the energy expended at.
... load the motor that its counter - electro - motive force e = H L , it will work with maximum commercial efficiency . The energy obtained at the motor spindle is represented by the area of the rectangle G F M T , the energy expended at.
Página 133
... load should vary , and in this case it becomes important to know how far on either side of the best speed a ... load and full load being only about 15 % in the present instance . It should be here remarked that the motor de- scribed is ...
... load should vary , and in this case it becomes important to know how far on either side of the best speed a ... load and full load being only about 15 % in the present instance . It should be here remarked that the motor de- scribed is ...
Página 134
... must run faster when the load is thrown off , and it must run slower if more work is put on it . We found the same to be the case with the pure series- SHUNT - WOUND MOTOR . 135 wound motor , but 134 ELECTRIC TRANSMISSION OF ENERGY .
... must run faster when the load is thrown off , and it must run slower if more work is put on it . We found the same to be the case with the pure series- SHUNT - WOUND MOTOR . 135 wound motor , but 134 ELECTRIC TRANSMISSION OF ENERGY .
Página 135
... load on , additional resistances must be placed into the armature circuit , which are again cut out as soon as the motor has attained some speed . We shall now investigate the problem in what manner the electro - motive force of the ...
... load on , additional resistances must be placed into the armature circuit , which are again cut out as soon as the motor has attained some speed . We shall now investigate the problem in what manner the electro - motive force of the ...
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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 333 - Argot and Slang. A new French and English Dictionary of the Cant Words, Quaint Expressions, Slang Terms, and Flash Phrases used in the high and low life of old and new Paris.
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...