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Journal of the American Institute of Electrical Engineers

Issue 3 • Date March 1921

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Displaying Results 1 - 25 of 33
  • The effect of heat on paper insulation

    Publication Year: 1921, Page(s):183 - 191
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3267 KB)

    A discussion is given in detail of the mechanical properties of paper especially as influenced by drying, heating, and impregnating. Tests for measuring the changes due to these causes are discussed and it is shown that tensile tests are unsatisfactory for this purpose. A measurement of tearing resistance is found to be satisfactory and two machines for this purpose are described. Measurements are... View full abstract»

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  • Superpower and its relation to industry

    Publication Year: 1921, Page(s):192 - 197
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1494 KB)

    THE SUPERPOWER idea is not new. It is only the expansion of present central station practise greater in magnitude, but not more complex in structure. It is the replacement of small scale by quantity production. View full abstract»

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  • Present-day practise limitations of oil circuit breakers: By the sub-committee on oil circuit breakers and switches of the protective devices committee

    Publication Year: 1921, Page(s):198 - 200
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (749 KB)

    IN ORDER to summarize the present-day indefinite operating requirements and limitations of oil circuit breakers, the A. I. E. E. (Protective Devices Committee), N. E. L. A. (Apparatus Committee) and Electric Power Club (Power Switchboard and Oil Circuit Breaker Section) cooperated in sending out a joint questionnaire for oil circuit breaker data to the larger operating companies. The response to t... View full abstract»

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  • Permissible operating temperatures of impregnated paper insulation in which the dielectric stress is low

    Publication Year: 1921, Page(s):201 - 202
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    FOR a number of years the standard low-tension direct-current feeder cable in Chicago was 1,000,-000-cir. mil two-conductor concentric paper-insulated cable with three pressure wires laid up with the outer conductor. Apparently there has been the greatest tendency to overload this particular size of cable more than any other as, with both single and concentric cables in service, it was difficult t... View full abstract»

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  • The story of the induction motor

    Publication Year: 1921, Page(s):203 - 223
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5906 KB)

    This paper covers the history of the technical side of the development of the induction motor, principally as the author saw it. It indicates the various stages of development from the early Tesla motor, with polar field construction, to the distributed field construction, and from the early wound-rotor type to the later almost universal cage type. Reference is made to the development of the cage ... View full abstract»

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  • Some phases of railroad telegraph and telephone engineering

    Publication Year: 1921, Page(s):224 - 232
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2984 KB)

    Statement of size of N. Y. C. Lines telegraph and telephone plant and variety of engineering problems involved. Telephones used almost exclusively for train dispatching, not so general for message work, but growing. Automatic telephones used. Extensive local and long distance lines and switchboards. Telegraph system reaches all stations. Pole line is basis of plant, increasing in strength to meet ... View full abstract»

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  • Developments in conversion apparatus for Edison systems

    Publication Year: 1921, Page(s):233 - 243
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5455 KB)

    ELECTRICAL energy for Edison systems is most efficiently produced and distributed to substations in the form of alternating current. At the substation it is converted into direct current and distributed to a three-wire network at a suitable voltage. Conversion apparatus for Edison systems has taken the form of motor-generator set, synchronous converter and dynarotor. The voltage-range requirement ... View full abstract»

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  • Longitudinal and transverse heat flow in slot-wound armature coils

    Publication Year: 1921, Page(s):244 - 248
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1225 KB)

    IT has long been recognized that the heat generated in embedded armature conductors by the I2R 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 air at the ducts) and in part flows longitudinally along the copper to the ends of the coils exposed to the cooling air. The importance of a... View full abstract»

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  • A. I. E. E. March meeting, New York

    Publication Year: 1921, Page(s): 249
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    Freely Available from IEEE
  • Future A. I. E. E. meetings April, Pittsburgh

    Publication Year: 1921, Page(s): 249
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  • Annual and Pacific Coast convention, Salt Lake City, June 21–24

    Publication Year: 1921, Page(s): 249
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  • Future section meetings

    Publication Year: 1921, Page(s): 249
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  • The 1921 Midwinter convention

    Publication Year: 1921, Page(s):250 - 251
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  • Excerpts from address of President Berresford at opening session

    Publication Year: 1921, Page(s): 251
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  • A. I. E. E. Directors meeting February 16, 1921

    Publication Year: 1921, Page(s):251 - 252
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  • The Institution of engineers (India)

    Publication Year: 1921, Page(s): 252
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  • John Fritz Gold medal

    Publication Year: 1921, Page(s): 252
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  • Scandinavian fellowships to be awarded

    Publication Year: 1921, Page(s): 252
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  • American Engineering Council

    Publication Year: 1921, Page(s):253 - 254
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (575 KB)

    A business meeting of American Engineering Council was held at the hotel Onondaga, Syracuse, N. Y., on the morning and afternoon of February 14, 1921, with Herbert Hoover presiding. The most important action at the meeting was the election of L. W. Wallace as Secretary of The Federated American Engineering Societies. Mr. Wallace has already been serving as Treasurer of the Federation and as Vice-C... View full abstract»

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  • Current engineering topics: Board of surveys and maps

    Publication Year: 1921, Page(s):254 - 255
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  • American engineering standards committee

    Publication Year: 1921, Page(s): 255
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  • Standardization of insulated wires and cables

    Publication Year: 1921, Page(s): 256
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  • Institute of radio engineers: Officers and board of directors for year 1921

    Publication Year: 1921, Page(s):256 - 257
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  • Personal mention

    Publication Year: 1921, Page(s):257 - 258
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  • Obituary

    Publication Year: 1921, Page(s): 258
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Aims & Scope

This Magazine ceased publication in 1923. The current retitled publication is IEEE Spectrum.

Full Aims & Scope