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pro vyhledávání: '"Carl J. Fechheimer"'
Autor:
Carl J. Fechheimer
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 52:325-328
TREATMENT is given in this paper to the temperature rise in the armatures of electrical machines after the machines have been run for such lengths of time that the temperatures have ceased to rise. However, it is stated that the method given for calc
Autor:
Carl J. Fechheimer
Publikováno v:
Proceedings of the American Institute of Electrical Engineers. 31:305-361
The following treatment of the starting of synchronous motors is intended to apply to polyphase motors and has been worked out for those of the revolving field type, but can doubtless be so modified as to apply to motors of the revolving armature typ
Autor:
Carl J. Fechheimer
Publikováno v:
Journal of the A.I.E.E.. 49:263-267
The studies were made experimentally and analytically. In the experimental study, a model of hard wood with a multiple of vent ducts of normal width of 3/8 in. each in the stator, the slots and teeth being of approximately average width was used. A f
Autor:
Carl J. Fechheimer
Publikováno v:
Electrical Engineering. 59:920-926
THE purposes of these investigations were: (1) to determine what the maximum temperatures of the copper and iron were, and to compare those maximum temperatures with thermometer readings; (2) to measure the average of the maximum temperatures by resi
Autor:
Carl J. Fechheimer
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 66:553-564
Autor:
G. W. Penney, Carl J. Fechheimer
Publikováno v:
Journal of the A.I.E.E.. 45:347-354
In 1924 two papers were presented before the A. I.E. E. on Turbo Alternator Ventilation. In one of the papers tests on two models for two methods of ventilation were described, and data from the tests were given. The other paper contained a mathemati
Autor:
Carl J. Fechheimer
Publikováno v:
Transactions of the American Institute of Electrical Engineers. :589-661
IT has long been recognized that the heat generated in embedded armature conductors by the I 2 R and eddy current losses in part escapes by transverse flow through the insulation from the copper to the iron (possibly, to a more limited extent, to the
Autor:
Carl J. Fechheimer
Publikováno v:
Proceedings of the American Institute of Electrical Engineers. 28:589-603
The statement is frequently made that 25-cycle alternators are more expensive than 60-cycle machines built for the same output, speed, voltage, and phase. A considerable difference of opinion exists at the present time as to how much more the low-fre
Autor:
G. W. Penney, Carl J. Fechheimer
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 47:537-546
The thermal volume meter was originally brought out by Professor Thomas, and is frequently called a Thomas meter. The principle is that the temperature of the gas is raised by means of an electrical heater, the change in temperature being accurately
Autor:
Carl J. Fechheimer
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 49:548-572
The studies were made experimentally and analytically. In the experimental study, a model of hard wood was used, with a multiple of vent ducts of normal width of ? in. each in the stator, the slots and teeth being of approximately average width. A fo