Electro-dynamics: The Direct-current MotorLongmans Green and Company, 1898 - 298 páginas |
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... PROFESSOR OF ELECTRICAL ENGINEERING AT MCGILL UNIVERSITY , MONTREAL LONGMANS , GREEN , AND CO . 39 PATERNOSTER ROW , LONDON NEW YORK AND BOMBAY 1898 All rights reserved THENEW YORK PUBLICARY 131093 ASTOR , LENOX AND TILDEN FOUNDATIONS.
... PROFESSOR OF ELECTRICAL ENGINEERING AT MCGILL UNIVERSITY , MONTREAL LONGMANS , GREEN , AND CO . 39 PATERNOSTER ROW , LONDON NEW YORK AND BOMBAY 1898 All rights reserved THENEW YORK PUBLICARY 131093 ASTOR , LENOX AND TILDEN FOUNDATIONS.
Página 25
... Professor Clerk Maxwell has stated that the only difference between these two kinds of communication of energy is that the motions and displacements which are concerned in the communication of heat are those of mole- cules , and are so ...
... Professor Clerk Maxwell has stated that the only difference between these two kinds of communication of energy is that the motions and displacements which are concerned in the communication of heat are those of mole- cules , and are so ...
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... Professor Clerk Maxwell's ' Theory of Heat . ' ) In considering the energy supplied to an electric motor we require to know precisely how much of the energy is spent in overcoming resistance to motion . It is not sufficient to know that ...
... Professor Clerk Maxwell's ' Theory of Heat . ' ) In considering the energy supplied to an electric motor we require to know precisely how much of the energy is spent in overcoming resistance to motion . It is not sufficient to know that ...
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... Professor Ewing and others have enabled us to do this in the case of hysteresis , so that we can actually trace the motions of the molecules accompanying this phenomena as easily as we can trace those of larger bodies , and measure the ...
... Professor Ewing and others have enabled us to do this in the case of hysteresis , so that we can actually trace the motions of the molecules accompanying this phenomena as easily as we can trace those of larger bodies , and measure the ...
Página 296
... Professor , researches of , 27 Excitation of magnets , loss due to , 134 FLEMING'S Rules , 43 , 266 Force factor defined , 169 Four - pole dynamos , weights of , 178 , 180 Friction , error in torque test due to , 9 loss in motor due to ...
... Professor , researches of , 27 Excitation of magnets , loss due to , 134 FLEMING'S Rules , 43 , 266 Force factor defined , 169 Four - pole dynamos , weights of , 178 , 180 Friction , error in torque test due to , 9 loss in motor due to ...
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accelerating current acceleration curve amperes armature B.Sc brushes cent centimetres CHEMISTRY circuit College connected in series constant Crown 8vo current curve current per motor Diagrams diameter difference distance travelled dynamo ELECTRICITY ELEMENTARY Engineers equal Example expenditure of energy f.p.s. per second feet per second final speed find the induction foot-pounds force factor frictional torque full speed gearing gives greater Hence horizontal horse-power hysteresis Illustrations inch-pounds increase induced tension induction curve induction factor line watts lines of force load London machine magnetic circuit magnets main shaft maximum current mechanical efficiency mechanical watts miles an hour motor shaft obtained pole-tip pounds railway motor reduced represent resistance to motion revolutions per minute revolutions per second rheostat rotation running Science series-wound motor speed curve Suppose surface conductors terminal tension tion tons torque curve torque loss total current total torque tractive effort velocity ratio volts weight Woodcuts
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