Electro-dynamics: The Direct-current MotorLongmans Green and Company, 1898 - 298 páginas |
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Página 6
... amperes is 60,000 inch - pounds . Example 2. - A ten - pole dynamo has 28.6 × 106 lines per pole and 1,440 surface conductors ; the armature is parallel connected , giving p = 1 . The torque for 800 amperes is 465,000 inch - pounds ...
... amperes is 60,000 inch - pounds . Example 2. - A ten - pole dynamo has 28.6 × 106 lines per pole and 1,440 surface conductors ; the armature is parallel connected , giving p = 1 . The torque for 800 amperes is 465,000 inch - pounds ...
Página 9
... Amperes . A - 200 10 20 AMPERES 30 40 50 IN 60 ARMATURE 70 80 FIG . 4 An ammeter should be placed in the magnet circuit and the current kept constant during the test . The induction factor obtained will be that for this particular ...
... Amperes . A - 200 10 20 AMPERES 30 40 50 IN 60 ARMATURE 70 80 FIG . 4 An ammeter should be placed in the magnet circuit and the current kept constant during the test . The induction factor obtained will be that for this particular ...
Página 10
... amperes at 125 volts , running at 1,500 revolu- tions per minute . The conductors are laid on the surface of the iron core . The torque is plotted on a base of amperes in the armature . The current in the magnets was kept constant at ...
... amperes at 125 volts , running at 1,500 revolu- tions per minute . The conductors are laid on the surface of the iron core . The torque is plotted on a base of amperes in the armature . The current in the magnets was kept constant at ...
Página 12
... amperes in the magnets are as 100 , 159 , and 178 . The corresponding values of N as obtained by a method to be presently described are 1.05 x 106 , 1.68 x 106 , and 1.89 × 106 . Amperes 6 Amperes " 7 6 5 4 3 2 3 Amperes MAGNETISATION ...
... amperes in the magnets are as 100 , 159 , and 178 . The corresponding values of N as obtained by a method to be presently described are 1.05 x 106 , 1.68 x 106 , and 1.89 × 106 . Amperes 6 Amperes " 7 6 5 4 3 2 3 Amperes MAGNETISATION ...
Página 15
... amperes , and the speed varied , the tension corresponding to each speed being observed and plotted in the figure . There was no current in the armature . The points found lie on straight lines passing through the origin , showing that ...
... amperes , and the speed varied , the tension corresponding to each speed being observed and plotted in the figure . There was no current in the armature . The points found lie on straight lines passing through the origin , showing that ...
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Términos y frases comunes
45 amperes accelerating current acceleration curve amperes armature B.Sc brushes cent centimetres CHEMISTRY circuit College Crown 8vo current curve current per motor Diagrams diameter difference distance travelled driving wheel dynamo ELECTRICITY 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 given distance gives greater Hence horizontal horse-power hysteresis Illustrations inch-pounds increase induced tension induction curve induction factor line watts lines of force lines per pole load machine 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 running series-wound motor speed curve starting rheostat Suppose surface conductors terminal tension tion tons torque curve torque loss total torque tractive effort velocity ratio volts weight Woodcuts
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