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Electrical Engineering

Issue 10 • Date Oct. 1931

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Displaying Results 1 - 25 of 32
  • [Front cover]

    Publication Year: 1931 , Page(s): c1
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    Freely Available from IEEE
  • [Front inside cover]

    Publication Year: 1931 , Page(s): c2
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    Freely Available from IEEE
  • Contents

    Publication Year: 1931 , Page(s): 1 - 2
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    Freely Available from IEEE
  • Arc welding in building construction

    Publication Year: 1931 , Page(s): 785 - 787
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    In this article are presented data obtained during the construction of the tallest building erected to date using the electric arc welding process. The outstanding advantages of this method of construction over the older method of riveting are (1) an almost complete absence of noise, and (2) the reduced steel tonnage required. View full abstract»

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  • Lumber moisture content determined electrically

    Publication Year: 1931 , Page(s): 787 - 788
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    THE OPERATION of determining accurately the amount of moisture present in lumber is reported to be greatly simplified by an electrical apparatus developed by C. G. Suits of the General Electric research laboratory, Schenectady, N. Y., and M. E. Dunlap of the United States Forest Products Laboratory at Madison, Wis. View full abstract»

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  • Solving the mystery of mercury arc rectifiers

    Publication Year: 1931 , Page(s): 788 - 793
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    The three factors most important in mercury arc rectifiers are vapor pressure, arc-drop, and geometry of the anode housing. Investigations of such factors described in this article, have increased the capacity of rectifiers considerably and made it possible to eliminate several undesirable features of their operation. View full abstract»

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  • Backfires in mercury rectifiers

    Publication Year: 1931 , Page(s): 793 - 796
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    Successful operation of mercury arc rectifiers requires the almost complete elimination of backfires. Studies made to eradicate this evil should recognize that backfires do not occur at some given stress, but are random in their nature. There is, however, an average rate of backfire which determines the reliability of a rectifier. View full abstract»

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  • Losses in mercury rectifier transformers

    Publication Year: 1931 , Page(s): 796 - 798
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    Improved methods of calculating and testing the losses in transformers for use with mercury arc rectifiers are now available. These methods greatly simplify the mathematics involved in loss calculations and make it possible to measure directly the losses of transformers independent of the rectifiers. View full abstract»

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  • Corona and line surges

    Publication Year: 1931 , Page(s): 798 - 801
    Cited by:  Papers (2)
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    Tests on an experimental transmission line show that from the standpoint of damping transient surges there is no advantage in operating the line at so high a voltage that the conductors will be in corona. View full abstract»

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  • Communication plays its part in electric power system operation

    Publication Year: 1931 , Page(s): 802
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    Present day electric power systems, with their complex and far-flung interconnections, cover such large areas that the communication lines serving them have become almost as important as the power lines themselves. In the five articles on this and the following nine pages fundamental requirements of the electric utilities are outlined, and the communication schemes used by four typical operating c... View full abstract»

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  • Underlying considerations of the problem outlined

    Publication Year: 1931 , Page(s): 802 - 805
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    EFFECTIVE COORDINATION of the activities of an electric utility necessitates the establishment of communication channels for the continuous flow of information into organization centers, and the prompt transmission of orders and suggestions from these centers to the points where action is taken. Voice communication appears to be especially adapted to meet these requirements, as is evidenced by the... View full abstract»

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  • Communication in the Niagara Hudson system

    Publication Year: 1931 , Page(s): 805 - 807
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    THE WESTERN DIVISION of the Niagara Hudson System which serves an area in New York State approximately 250 mi. long and 100 mi. wide has developed a coordinated communication plan including both privately owned and leased lines supplemented by carrier current. In the development of this system, engineers of the New York Telephone Company have worked in cooperation with the power company's operatin... View full abstract»

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  • Joint study improves communication facilities

    Publication Year: 1931 , Page(s): 807 - 809
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    A LARGE GROUP of interconnected wholesale and retail electric companies are operated by the New England Power Association in a highly developed industrial area covering parts of five states. Energy is generated at eleven major hydro stations on the Connecticut and Deerfield rivers, whence it is transmitted over a high-voltage network to the load centers in central and eastern Massachusetts and Rho... View full abstract»

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  • Communication in a metropolitan system

    Publication Year: 1931 , Page(s): 809 - 810
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    COMMUNICATION facilities for the Commonwealth Edison Company system (Chicago) the fixed plant of which is scattered over the entire city, include 19 telephone switchboards, and a total of about 2,600 telephone stations. The main switchboard, together with seven sub-boards, are located in the Edison Building in the downtown section of the city. Of particular interest are the facilities employed in ... View full abstract»

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  • Carrier communication economical for long distances

    Publication Year: 1931 , Page(s): 810 - 812
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    CARRIER-CURRENT telephony supplies most of the communication needs for the Arkansas-Louisiana-Mississippi interconnected system comprising a total of approximately 1,800 mi. of 110-kv. lines. Operating supervision for the entire interconnected network is centered in the load-dispatcher's office at the Woodward switching station near Pine Bluff (Ark.) except for the southern portion which is handle... View full abstract»

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  • The way to progress and prosperity

    Publication Year: 1931 , Page(s): 812 - 813
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    Equitable taxes and fair distribution of the cost of government in place of the present unfair indirect bonus system is urged as a vital first step toward cultural progress and public welfare. This is the third article of The Engineering Foundation's symposium “Has Man Benefited by Engineering Progress?” View full abstract»

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  • The simplex synchronous motor

    Publication Year: 1931 , Page(s): 814 - 815
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    Salient-pole synchronous motors with phase-connected damper windings are capable of developing high starting and pull-in torques with low starting current, as revealed by information given here. View full abstract»

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  • Stabilization of industry

    Publication Year: 1931 , Page(s): 816 - 819
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    Details are discussed of a plan which would provide for the regulation of industry through mutual trade associations under federal supervision. Production, consumption, and other factors would be coordinated to reduce cyclic variations; employees would participate jointly in providing unemployment insurance protection and other benefits which would accumulate for the employee regardless of legitim... View full abstract»

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  • Synchronous motors for special loads

    Publication Year: 1931 , Page(s): 819 - 823
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    The field of the synchronous motor can be considerably widened by variations in the design of normal motors of this type. Special requirements in starting current and in starting, pull-in, and pull-out torque can be met without resorting to unusual forms of motor design. View full abstract»

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  • Severe lightning tests made on “surge-proof” transformers

    Publication Year: 1931 , Page(s): 823 - 824
    Cited by:  Papers (1)
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    AN INTERESTING SERIES of lightning tests was made on Sunday, August 23, by the Westinghouse Electric and Manufacturing Company on each of four 42,000-kva., 220-kv. single-phase transformers. These units are of the new non-oscillating surge-proof type of construction recently developed by this company, which states that the transformers embody features of insulation design effecting greatly improve... View full abstract»

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  • Relaying with two pilot wires

    Publication Year: 1931 , Page(s): 824 - 826
    Cited by:  Papers (3)
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    The fastest relay scheme for isolating a faulty section of transmission line is the pilot-wire system. This usually requires four wires between stations, and therefore cost limits its application to short sections of line. A modified scheme is described herewith which reduces the number of wires needed. View full abstract»

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  • Experiments with short arcs

    Publication Year: 1931 , Page(s): 827 - 829
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    Observations were made on all phases of the arc discharge, including the transition period between the glow and arc stages. Current density at the cathode is shown to be the factor determining when that transition will take place, rather than the temperature of that element as was thought formerly. View full abstract»

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  • Repulsion starting for capacitor motors

    Publication Year: 1931 , Page(s): 830 - 831
    Cited by:  Papers (1)
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    The characteristics of single-phase motors are improved considerably by the addition of a capacitor winding on the stator. High torque and low current during starting also can be secured by the use of a repulsion type of rotor. View full abstract»

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  • Distribution systems for industrial plants

    Publication Year: 1931 , Page(s): 831
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    THE PLANNING of an electric distribution system for industrial plants may be divided into two distinct parts: (1) determination of the electrical characteristics, and (2) the physical arrangement of the system. Under these two headings W. J. McClain (associated with Louis T. Klauder, consulting engineer, Philadelphia, Pa.) discusses the problem in a very general way in a current A. I. E. E. paper. View full abstract»

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  • Electron tubes for industrial control

    Publication Year: 1931 , Page(s): 831
    Request Permissions | Click to expandAbstract | PDF file iconPDF (151 KB)  

    ELECTRON TUBES have been in every-day use in radio and other communication fields for many years. It is only recently, however, that the field of application has been extended to include industrial usages, and while the gross number of industrial installations employing electron tubes is not enormous, important progress has been made in applying these new electrical tools to the problems of indust... View full abstract»

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Aims & Scope

This Periodical ceased publication in 1963. The current retitled publication is IEEE Spectrum.

Full Aims & Scope