Electric Transmission of Energy and Its Transformation, Subdivision, and Distribution: A Practical HandbookWhittaker & Company, 1886 - 331 páginas |
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Página 41
... receiving the current , and A , B1 , C1 D1 , be the bars in which the current is originated by the movement of the slider a1 b1 , and it will be clear that by performing mechanical work on the latter slider , we can cause the slider ab ...
... receiving the current , and A , B1 , C1 D1 , be the bars in which the current is originated by the movement of the slider a1 b1 , and it will be clear that by performing mechanical work on the latter slider , we can cause the slider ab ...
Página 42
... receiving slider is P ; let also v1 and v be respectively their velocities , and e , and e respectively the electro- motive forces , then the following equations evidently obtain : C = e1 = F1 d1 v1 , e = F dv , P1 = P = e1 -e T F1 d1 ...
... receiving slider is P ; let also v1 and v be respectively their velocities , and e , and e respectively the electro- motive forces , then the following equations evidently obtain : C = e1 = F1 d1 v1 , e = F dv , P1 = P = e1 -e T F1 d1 ...
Página 43
... receiving machine . Since e = F d v , any reduction in F , consequent upon the loss of some of the magnetizing current through a leak in the line , has naturally the effect of increasing v , the velocity of the receiving machine , and ...
... receiving machine . Since e = F d v , any reduction in F , consequent upon the loss of some of the magnetizing current through a leak in the line , has naturally the effect of increasing v , the velocity of the receiving machine , and ...
Página 44
... receiving machine . From the equation for P , we find immediately the speed of the receiving machine , 1 F1 d v = vi F d r P F2 d2 . As will be seen , this speed is not directly proportional to the speed of the generator , and if the ...
... receiving machine . From the equation for P , we find immediately the speed of the receiving machine , 1 F1 d v = vi F d r P F2 d2 . As will be seen , this speed is not directly proportional to the speed of the generator , and if the ...
Página 136
... receiving machine , because the electro - motive force of the generator -which we suppose to be driven by some prime mover at a constant speed - decreases as the current given out in- creases , whereas the motor requires exactly the ...
... receiving machine , because the electro - motive force of the generator -which we suppose to be driven by some prime mover at a constant speed - decreases as the current given out in- creases , whereas the motor requires exactly the ...
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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...