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Transactions of the American Institute of Electrical Engineers

Volume 53: 1934

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Displaying Results 1 - 25 of 47
  • Industrial Notes

    Publication Year: 1934, Page(s): 236
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    Freely Available from IEEE
  • Engineering Literature

    Publication Year: 1934, Page(s): 235
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    Freely Available from IEEE
  • Membership

    Publication Year: 1934
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    Freely Available from IEEE
  • Obituary [Calvert Townley; Kempster Blanchard Miller; John Franklin Stevens; T. Herbert Clegg; Thorburn Reid; Veator David Mendenhall; and William Fenner Lamme]

    Publication Year: 1934, Page(s):233 - 234
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  • Letters to the Editor

    Publication Year: 1934, Page(s):228 - 233
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  • News of Institute and related activities

    Publication Year: 1934, Page(s):220 - 228
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  • Auditory Perspective-System Adaptation

    Publication Year: 1934, Page(s):216 - 219
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1732 KB)

    A communication system for the pick-up and reproduction in auditory perspective of symphonic music must be designed properly with respect to the acoustics of the pick-up auditorium and the concert hall involved. The reverberation times and sound distribution in the two auditoriums, the location of the microphones and loud speakers, and the response-frequency calibration of the system and its equal... View full abstract»

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  • Control or Distance Relay Potential Connections

    Publication Year: 1934, Page(s):206 - 213
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1640 KB)

    By means of the automatic switching of potential connections to distance relays according to type of fault, each distance relay may be made to do the work of 2 or 3 such relays. The cost of distance relay installations may be reduced considerably by this automatic control of potential connections, and consequently their use should become more widespread. View full abstract»

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  • High Frequency Induction Furnaces

    Publication Year: 1934, Page(s):194 - 205
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6903 KB)

    In language understandable by the average electrical engineer, this paper presents a brief outline of the theory of the electric induction furnace and of the application of that theory to the operating characteristics and limitations of such furnaces. From a metallurgical standpoint the chief advantages associated with the use of induction furnaces are: freedom from contamination of the melt, the ... View full abstract»

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  • Pantograph Trolleys II--Operating Features

    Publication Year: 1934, Page(s):190 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1071 KB)

    Satisfactory current collection on electric railways using pantograph trolleys depends on the ability of the pantograph to follow irregularities in the height of the contact wire at all operating speeds and within a limited range of pressures between the contact wire and the shoe. In this paper operating characteristics of pantograph collectors are outlined, and operating data for 3 typical pantog... View full abstract»

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  • Pantograph Trolleys I--Design Features

    Publication Year: 1934, Page(s):182 - 189
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    Improvements have been made in practically every part of pantograph trolleys used for current collection on electric railways. As a result of these many improvements the pantograph of most recent design fulfills its important function in a highly satisfactory manner. Designs now are available for collecting currents of any magnitude found on either a-c or d-c roads at any speed up to 100 mph. View full abstract»

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  • Portable Schering Bridge for Field Tests

    Publication Year: 1934, Page(s):176 - 182
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3441 KB)

    A portable Schering bridge which is applicable for power factor, dielectric loss, and capacitance tests on condenser bushings and other equipment of higher capacitance in the field is described in this paper, and operating procedure is given. Such tests are desirable for forestalling failures of equipment. Although earlier power factor tests on bushings have been made in the field, this is probabl... View full abstract»

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  • Impulse Generator Circuit Formulas

    Publication Year: 1934, Page(s):169 - 176
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1619 KB)

    With impulse voltage testing of electrical equipment becoming more widely used, it seems highly desirable to be able to calculate the circuit constants required to produce the desired test waves and to calculate the waves that any given circuit constants will give. In this paper the solution of the more commonly used impulse generator circuits is developed and summarized. Waves calculated by these... View full abstract»

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  • Switching at the Connors Creek Plant

    Publication Year: 1934, Page(s):162 - 168
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6360 KB)

    A description of the switching facilities at Essex station, adjacent to the Connors Creek generating plant of The Detroit (Mich.) Edison Company, is given this paper, which is part of a symposium on electric power switching at modern large steam-electric generating plants. Essex station, which has been in operation less than 2 years, has had an unusually good service record. View full abstract»

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  • Switching at Richmond Station

    Publication Year: 1934, Page(s):156 - 161
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1525 KB)

    The essential features of the switching facilities at 13 kv and 66 kv at the Richmond generating station of the Philadelphia Electric Company are described. Operating experiences with such facilities are outlined and certain desirable improvements in future design are indicated. This paper is part of a symposium on electric power switching at modern large steam-electric plants. View full abstract»

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  • Switching at State Line Station

    Publication Year: 1934, Page(s):148 - 156
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3269 KB)

    A station having several unique features, including an outdoor oil-filled metal-clad 22-kv switchgear for main generator bus is referred to in this paper. The station forms an important link in a large and intricate transmission and distribution system. This paper is part of a symposium on electric power switching at modern large steam-electric generating plants. View full abstract»

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  • Electric Power Switching

    Publication Year: 1934, Page(s):147 - 148
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (431 KB)

    A SYMPOSIUM on switching power at modern large generating plants is included on the program of the Institute's forthcoming winter convention. Five papers, each describing the facilities at one such plant, are to be discussed. Three of these papers are included in this issue, the other 2 having been included in the December 1933 issue. The following article serves as an introduction to this symposi... View full abstract»

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  • Protecting Machines From Line Surges

    Publication Year: 1934, Page(s):139 - 146
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1670 KB)

    Some of the more important technical problems involved in connecting rotating machines directly to overhead electric power transmission lines are discussed in this paper. Methods are developed for protecting the ground and turn insulations Protecting the ground and turn insulations of the armatures of such machines which may be subjected to surge voltages. The ground insulation can be protected by... View full abstract»

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  • Rocking Indirect Arc Electric Furnaces

    Publication Year: 1934, Page(s):132 - 138
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6686 KB)

    The electric furnace of the rocking type with indirect arc has been developed to the point where it may be used not only For the melting of nonferrous metals but also in the production of castings of various types of iron and steel. Accurate control of the process is possible. Many new cast irons may thus be produced with qualities greatly superior to the cast iron which may be produced by any oth... View full abstract»

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  • Equivalent Reactance of Synchronous Machines

    Publication Year: 1934, Page(s):124 - 132
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1645 KB)

    Steady state characteristics of synchronous machines of normal design are affected appreciably by changes in magnetic saturation. In this paper the efect of saturation is included in the derivation of the equations for determining steady state performance. It is shown that a saturated machine under steady state conditions, and for small changes from the original operating point, can be replaced fo... View full abstract»

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  • Cast Iron and Its Production

    Publication Year: 1934, Page(s):120 - 123
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    A brief description of cast iron and a comparison of the 2 processes used to produce it are given in this paper. The cost of cast iron produced either by the cupola or the electric furnace is the same. The electric furnace permits superheating and the production of iron of any composition with accurate control. On the other hand, the cupola is limited to the production of high carbon Iron. As a re... View full abstract»

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  • Stabilized Feed-Back Amplifiers

    Publication Year: 1934, Page(s):114 - 120
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1435 KB)

    This paper describes and explains the theory of the Feed-back principle and demonstrates how stability of amplification, reduction of modulation products, and certain other advantages follow when stabilized feed-back is applied to an amplifier. The underlying principle of design by means of which ``singing'' is avoided also is set Forth. The paper concludes with some examples of results obtained o... View full abstract»

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  • An A-C Potentiometer

    Publication Year: 1934, Page(s):108 - 113
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    A rectangular co??rdinate potentiometer circuit is described in this paper, the chief features of which are the elimination of the usual phase shifting transformer and the slide-wire type of potentiometer resistor. Although not yet available in commercial form this potentiometer has been in use in the laboratory for several years with good results, particularly in magnetic measurements at low and ... View full abstract»

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  • The Pitt-Westinghouse Graduate Program

    Publication Year: 1934, Page(s):103 - 108
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1567 KB)

    Recognizing that some of the highest types of graduate engineering instruction is to be found in a few of the larger research and industrial organizations, the University of Pittsburgh (Pa.) and the Westinghouse company during the past several years have co??perated in a joint program of graduate study for certain designated employees of the company. Besides being of distinct benefit to the indivi... View full abstract»

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  • An Economic Study of Suburban Distribution

    Publication Year: 1934, Page(s):97 - 103
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2349 KB)

    Results of a recently completed study of methods of increasing the distribution facilities in Somerville, Mass., are presented in this paper. The economic study included several different plans covering a 10-year period, and as a result a plan is proposed which permits modification to suit Future conditions. View full abstract»

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