Electric Transmission of Energy and Its Transformation, Subdivision, and Distribution: A Practical HandbookWhittaker & Company, 1886 - 331 páginas |
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Página 13
... position that its magnetic axis , that is a straight line joining its two poles , becomes a tangent to the curve . ( Fig . 2. ) It should here be remarked that unless the needle is very short in comparison to the mag- net it will , when ...
... position that its magnetic axis , that is a straight line joining its two poles , becomes a tangent to the curve . ( Fig . 2. ) It should here be remarked that unless the needle is very short in comparison to the mag- net it will , when ...
Página 15
... position , and if this process should be too laborious to be performed by hand , we can accomplish it in an instant by replacing our magnet under the paper , Fig . 3 . 121 when its line of force corresponding to the chain of particles ...
... position , and if this process should be too laborious to be performed by hand , we can accomplish it in an instant by replacing our magnet under the paper , Fig . 3 . 121 when its line of force corresponding to the chain of particles ...
Página 17
... position of magnetic continuity are not so easily disturbed again , and thus the harder the steel the more permanent is its magnetization . In soft iron the molecules will lose their magnetic con- tinuity as easily as it was acquired ...
... position of magnetic continuity are not so easily disturbed again , and thus the harder the steel the more permanent is its magnetization . In soft iron the molecules will lose their magnetic con- tinuity as easily as it was acquired ...
Página 31
... position the weight has , therefore , a cer- tain potential energy , which is equal to the product of the weight multiplied by the distance to which it has been raised . If the weight be unity , this product is numerically equal to the ...
... position the weight has , therefore , a cer- tain potential energy , which is equal to the product of the weight multiplied by the distance to which it has been raised . If the weight be unity , this product is numerically equal to the ...
Página 32
... position of the small body . If we re- move our pith ball to an infinite distance , so as to be completely beyond the repulsive action of the larger body , we can consider it to be in that position analogous to unit weight placed at ...
... position of the small body . If we re- move our pith ball to an infinite distance , so as to be completely beyond the repulsive action of the larger body , we can consider it to be in that position analogous to unit weight placed at ...
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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...