Electro-dynamics: The Direct-current MotorLongmans Green and Company, 1898 - 298 páginas |
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Página 5
... inch- pounds . Remembering that a weight of one pound is equal to 4.45 x 105 dynes , we get t = 1.41 AcN10-8 inch - pounds ......... . ( 3 ) . We have for simplicity supposed that the dynamo has only two poles , and that N lines enter ...
... inch- pounds . Remembering that a weight of one pound is equal to 4.45 x 105 dynes , we get t = 1.41 AcN10-8 inch - pounds ......... . ( 3 ) . We have for simplicity supposed that the dynamo has only two poles , and that N lines enter ...
Página 6
... 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 . Equation 4 may be ...
... 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 . Equation 4 may be ...
Página 7
... inch - pounds . 6 In estimating A we have to count round the entire surface of the armature , and include only those conductors which , being adjacent , are also in series with one another . In many cases one conductor , ' according to ...
... inch - pounds . 6 In estimating A we have to count round the entire surface of the armature , and include only those conductors which , being adjacent , are also in series with one another . In many cases one conductor , ' according to ...
Página 5
The Direct-current Motor Charles Ashley Carus-Wilson. INCH POUNDS 100 OF 200 TORQUE Since the torque in Equation 5 is that due to the action of a current in the armature , we must be careful that we do not credit either the frictional or ...
The Direct-current Motor Charles Ashley Carus-Wilson. INCH POUNDS 100 OF 200 TORQUE Since the torque in Equation 5 is that due to the action of a current in the armature , we must be careful that we do not credit either the frictional or ...
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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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