Electro-dynamics: The Direct-current MotorLongmans Green and Company, 1898 - 298 páginas |
Dentro del libro
Resultados 1-5 de 50
Página 13
... force is ; there will therefore be an induced tension at the ends of each conductor equal to dn dt c.g.s units of tension , or dn10-8 volts , so that if each conductor were separate from dt all the other conductors , we should observe a ...
... force is ; there will therefore be an induced tension at the ends of each conductor equal to dn dt c.g.s units of tension , or dn10-8 volts , so that if each conductor were separate from dt all the other conductors , we should observe a ...
Página 14
... induced tension in a dynamo is given by multiplying the induction factor by the number of revolutions per second . The induction factor may thus be defined as the induced volts divided by the number of revolutions per second . We must ...
... induced tension in a dynamo is given by multiplying the induction factor by the number of revolutions per second . The induction factor may thus be defined as the induced volts divided by the number of revolutions per second . We must ...
Página 15
... induced tension . If the speed be plotted along a horizontal axis and the readings of the voltmeter along a vertical axis , then if M is constant for any given current in the magnets , the locus of the observed points should be a ...
... induced tension . If the speed be plotted along a horizontal axis and the readings of the voltmeter along a vertical axis , then if M is constant for any given current in the magnets , the locus of the observed points should be a ...
Página 16
... INDUCED TENSION ARC LIGHT DYNAMO . Current in Magnets Constant . 300 100 600 REVOLUTIONS PER 1000 10 " 40 70 50 < 60 FACTOR 20 INDUCTION 30- 10 ICO 400 300 200 INDUCED 500 600 VOLTS 700 shaft when a current of 300 amperes is passed ...
... INDUCED TENSION ARC LIGHT DYNAMO . Current in Magnets Constant . 300 100 600 REVOLUTIONS PER 1000 10 " 40 70 50 < 60 FACTOR 20 INDUCTION 30- 10 ICO 400 300 200 INDUCED 500 600 VOLTS 700 shaft when a current of 300 amperes is passed ...
Página 17
... induced tension is 565 , and M is 77. The pull due to the armature current is equal to the torque divided by the radius of the pulley , or 2,166 pounds . If we had neglected the heat drop , the pull would have appeared to be 56 pounds ...
... induced tension is 565 , and M is 77. The pull due to the armature current is equal to the torque divided by the radius of the pulley , or 2,166 pounds . If we had neglected the heat drop , the pull would have appeared to be 56 pounds ...
Otras ediciones - Ver todas
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
Pasajes populares
Página 11 - Notes of a Course of Nine Lectures on Light, delivered at the Royal Institution. , By John Tyndall, FRS Crown 8vo. is. sewed, or is. 6d. cloth. Notes of a Course of Seven Lectures on Electrical Phenomena and Theories, delivered at the Royal Institution.
Página 12 - Price 3$. 6d. On the STRENGTH of MATERIALS and STRUCTURES : the Strength of Materials as depending on their quality and as ascertained by Testing Apparatus ; the Strength of Structures, as depending on their form and arrangement, and on the materials of which they are composed. By Sir J.
Página 2 - Crown 8vo., y. net. ^FRANKLAND. — MICRO-ORGANISMS IN WATER. Together with an Account of the Bacteriological Methods involved in their Investigation. Specially designed for the use of those connected with the Sanitary Aspects of WaterSupply. By PERCY FRANKLAND, Ph.D., B.Sc. (Lond.), FRS, and Mrs. PERCY FRANKLAND. With 2 Plates and Numerous Diagrams. 8vo.
Página 11 - NOTES OF A COURSE OF SEVEN LECTURES ON ELECTRICAL PHENOMENA AND THEORIES, delivered at the Royal Institution of Great Britain, 1870.
Página 289 - GANOT.— Works by PROFESSOR GANOT. Translated and Edited by E. ATKINSON, Ph.D., FCS ELEMENTARY TREATISE ON PHYSICS, Experimental and Applied. With 9 Coloured Plates and Maps, and 1028 Woodcuts, and Appendix of Problems and Examples with Answers. Crown 8vo. , 15s. NATURAL PHILOSOPHY FOR GENERAL READERS AND YOUNG PERSONS ; With 7 Plates, 624 Woodcuts, and an Appendix of Questions.
Página 4 - Illustrations, a large proportion of which are Coloured, the Arteries being coloured red, the Veins blue, and the Nerves yellow. The attachments of the muscles to the bones, in the section on Osteology, are also shown in coloured outline. Royal 8vo., 32^.
Página 292 - WRIGHT— Optical Projection : a Treatise on the Use of the Lantern in Exhibition and Scientific Demonstration. By LEWIS WRIGHT, Author of ' Light : a Course of Experimental Optics '. With 232 Illustrations.
Página 288 - Works by R. LLOYD WHITELEY, FIC, Principal of the Municipal Science School, West Bromwich. CHEMICAL CALCULATIONS. With Explanatory Notes, Problems and Answers, specially adapted for use in Colleges and Science Schools. With a Preface by Professor F. CLOWES, D.Sc. (Lond.), FIC Crown 8vo., 2s.
Página 294 - MARINE BOILER MANAGEMENT AND CONSTRUCTION. Being a Treatise on Boiler Troubles and Repairs, Corrosion, Fuels, and Heat, on the properties of Iron and Steel, on Boiler Mechanics, Workshop Practices, and Boiler Design. By CE STROMEYER, Chief Engineer of the Manchester Steam Users' Association, Member of Council of the Institution of Naval Architects, etc. With 452 Diagrams, etc. 8vo. , 121. net. ARCHITECTURE, BUILDING CONSTRUCTION, ETC. ADVANCED BUILDING CONSTRUCTION. By the Author of