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Transactions of the American Institute of Electrical Engineers

Volume XLIV: 1925

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Displaying Results 1 - 25 of 114
  • Index of authors

    Publication Year: 1925, Page(s):1105 - 1108
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  • Subject index

    Publication Year: 1925, Page(s):1100 - 1104
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  • A.I.E.E. Representatives

    Publication Year: 1925, Page(s):1098 - 1099
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  • A.I.E.E. Committees

    Publication Year: 1925, Page(s):1096 - 1097
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  • Officers of A.I.E.E. 1924-1925

    Publication Year: 1925, Page(s): 1096
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  • Report of the Board of Directors for the Fiscal Year Ending April 30, 1925

    Publication Year: 1925, Page(s):1086 - 1095
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  • Opportunities and Problems in the Electric Distribution System

    Publication Year: 1925, Page(s):1072 - 1085
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3506 KB)

    An illutstrative electric service system is analyzed to show the importance of the distribution system for the benefit of those not familiar with distribution problems. The diversity factor and load factor are employed to show their effect on investment and losses. The important subject of a-c. secondary networks is discussed relative to switching, induction regulators and a-c. elevator equipments... View full abstract»

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  • Induction from Street Lighting Circuits Effects on Telephone Circuits

    Publication Year: 1925, Page(s):1065 - 1072
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1944 KB)

    This paper discusses series street lighting circuits from the point of view of their relations to nearby telephone circuits. These lighting circuits often have a much greater inductive influence in proportion to the amount of power transmitted than have most other types of power distribution or transmission circuits. This is due to the relatively large distortion in wave shape of voltage and curre... View full abstract»

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  • Power Distribution and Telephone Circuits Inductive and Physical Relations

    Publication Year: 1925, Page(s):1052 - 1064
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3398 KB)

    Consideration of the relations between power distribution and telephone systems is naturally involved in any comprehensive review of the problems of the rapidly expanding power-distribution networks in this country. Avoidance of contact and provision of suitable working conditions for employees in situations of close proximity are dealt with in the National Electrical Safety Code and in State Regu... View full abstract»

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  • Improvement in Distribution Methods

    Publication Year: 1925, Page(s):1038 - 1051
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7062 KB)

    The object of this paper is to point out how protective measures which have been applied to a low-voltage distribution network can be utilized to improve the operating characteristics of the entire distribution system, as well as materially lower its installation cost. Many of the developments herein described are novel departures from more generally recognized practises. They have all, however, w... View full abstract»

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  • Engineering Research-An Essential Factor in Engineering Education

    Publication Year: 1925, Page(s):1031 - 1037
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  • The Study of Ions and Electrons for Electrical Engineers

    Publication Year: 1925, Page(s):1025 - 1031
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  • On the Nature of Corona Loss

    Publication Year: 1925, Page(s):1016 - 1024
    Cited by:  Papers (12)
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  • Some Features and Improvements on the High-Voltage Wattmeter

    Publication Year: 1925, Page(s):1010 - 1015
    Cited by:  Papers (6)
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  • Application of Electric Propulsion to Double-Ended Ferry-Boats

    Publication Year: 1925, Page(s):1004 - 1009
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1362 KB)

    The double-ended ferry-boat propelled by means of a, bow and stern propeller has become the recognized standard type, due to its maneuvering possibilities and general handiness in congested harbors. In all cases in which the prime mover is directly coupled to the two propeller shafts which must necessarily turn at the same revolutions per minute, the over-all propulsive efficiency is lowered due t... View full abstract»

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  • Transmission Stability Analytical Discussion of Some Factors Entering into the Problem

    Publication Year: 1925, Page(s):984 - 1003
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5362 KB)

    The subject of stability has been much discussed lately, because it has an important bearing on future large power developments. In the early stages of a large program, such as the proposed superpower program, good engineering and commonsense dictate that each step should be very carefully considered from all points of view, since a blunder or failure to give proper weight to some important factor... View full abstract»

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  • Fundamental Considerations of Power Limits of Transmission Systems

    Publication Year: 1925, Page(s):972 - 984
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4845 KB)

    At this time the power limit of transmission lines is a live subject and presents such complications as to require very careful analysis. The paper points out the essential features to be considered in a study of the problem, and calls attention to some out-standing results of an experimental investigation of the subject with a view to clarifying some of the points that have been under discussion ... View full abstract»

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  • 220-Kv. Transmission Transients and Flashovers

    Publication Year: 1925, Page(s):961 - 971
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5140 KB)

    The conclusion has been reached that birds are the cause of flashovers on the Southern California Edison line. The frequency and location of flashovers is given for nine years of operation at 150 kv. and two years at 220 kv. The increase in the number of flashovers when first going to 220 kv. has been reduced. so that now there is no greater number than there was at 150 kv. This has been done by i... View full abstract»

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  • The Long Span Across The Narrows at Tacoma

    Publication Year: 1925, Page(s):954 - 960
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  • Transmission Line Design Mechanical Design of Spans With Supports at Unequal Elevations

    Publication Year: 1925, Page(s):938 - 953
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2828 KB)

    The purpose of this paper is to derive a practical method of design based upon the catenary formulas for spans whose supports are not at the same elevation. It is furthermore intended completely to formulate the method for applying it to any cable which is suspended freely or is uniformly loaded, as well as for obtaining its characteristics after the temperature or loading conditions of the cable ... View full abstract»

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  • Stored Mechanical Energy in Transmission Systems

    Publication Year: 1925, Page(s):935 - 937
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    The paper considers the performance of the stored mechanical energy in the moving masses connected synchronously to a transmission system during changes in load, changes in input, and changes of transmission capacity, The stored mechanical energy greatly affects the performance of a transmission system, during sudden changes in transmission line capacity occasioned by switching out or in a paralle... View full abstract»

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  • Hydrogen as a Cooling Medium for Electrical Machinery

    Publication Year: 1925, Page(s):922 - 934
    Cited by:  Papers (10)
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    This paper presents the results of a large amount of theoretical study and a large number of tests to determine the advantages of hydrogen as a cooling medium in electrical machiney. The conclusions fall into two classes, some definite and some speculative. In the former class are: 1. For the same operating temperature a steam turbine-driven generator of a given size will have a capacity at least ... View full abstract»

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  • Three-Phase, 60,000-Kv-a. Turbo Alternators for Gennevilliers

    Publication Year: 1925, Page(s):905 - 921
    Cited by:  Papers (7)
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  • Corona Investigation on an Artificial Line

    Publication Year: 1925, Page(s):897 - 904
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4175 KB)

    Accompanying corona on a transmission line, there has been found, in several cases, an appreciable increase in the line charging current over that indicated by the usual formula. This has been taken to indicate an increased line capacitance resulting from the presence of the corona envelope about the conductors, and has, for this reason, come to be described as the extra-capacity effect of corona.... View full abstract»

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  • Law Description and Hypothesis in the Electrical Science

    Publication Year: 1925, Page(s):892 - 897
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