Electro-dynamics: The Direct-current MotorLongmans Green and Company, 1898 - 298 páginas |
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... possible . There are now so many excellent text - books on electricity and magnetism , that I offer no apology for omitting discussion of elementary principles here . I have not considered it necessary to deal with the subject of self ...
... possible . There are now so many excellent text - books on electricity and magnetism , that I offer no apology for omitting discussion of elementary principles here . I have not considered it necessary to deal with the subject of self ...
Página 20
... possible . The action of the current on the sented by the moment of a force of may be repre- acting at a distance of inches from the axis of rotation . The. 20 CH . II THE DIRECT - CURRENT MOTOR CONDITIONS OF UNIFORM MOTION.
... possible . The action of the current on the sented by the moment of a force of may be repre- acting at a distance of inches from the axis of rotation . The. 20 CH . II THE DIRECT - CURRENT MOTOR CONDITIONS OF UNIFORM MOTION.
Página 22
... possible ways , as heat and as work . The Principle of the Conservation of Energy tells us that the energy supplied to the circuit , per second , must be equal to the energy spent in heating together with that spent in doing work . We ...
... possible ways , as heat and as work . The Principle of the Conservation of Energy tells us that the energy supplied to the circuit , per second , must be equal to the energy spent in heating together with that spent in doing work . We ...
Página 29
... possible current is amperes . If the induction factor or R the motor be M , the torque produced by this current in the EM armature , as given by Equation 5 , is 1 · 41 inch - pounds . R If the load is greater than this amount the ...
... possible current is amperes . If the induction factor or R the motor be M , the torque produced by this current in the EM armature , as given by Equation 5 , is 1 · 41 inch - pounds . R If the load is greater than this amount the ...
Página 30
... possible speed in revolutions per second , and DB the M E R maximum current amperes . Join BO , then the inter- cept of any vertical ordinate between DB and BO repre- sents both the speed and the induced tension for any current , since ...
... possible speed in revolutions per second , and DB the M E R maximum current amperes . Join BO , then the inter- cept of any vertical ordinate between DB and BO repre- sents both the speed and the induced tension for any current , since ...
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Términos y frases comunes
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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