By Topic

American Institute of Electrical Engineers, Transactions of the

Volume XXXVII: 1918

Filter Results

Displaying Results 1 - 25 of 35
  • Synoptical and Topical Index of A.I.E.E. Transactions

    Publication Year: 1918 , Page(s): 1 - 57
    Save to Project icon | Request Permissions | PDF file iconPDF (5103 KB)  
    Freely Available from IEEE
  • Index

    Publication Year: 1918 , Page(s): v - vii
    Save to Project icon | Request Permissions | PDF file iconPDF (299 KB)  
    Freely Available from IEEE
  • Report of the Board of Directors for Fiscal Year Ending April 30, 1918

    Publication Year: 1918 , Page(s): 1867 - 1888
    Save to Project icon | Request Permissions | PDF file iconPDF (2064 KB)  
    Freely Available from IEEE
  • Standardization Rules of the American Institute of Electrical Engineers

    Publication Year: 1918 , Page(s): 1747 - 1866
    Save to Project icon | Request Permissions | PDF file iconPDF (10503 KB)  
    Freely Available from IEEE
  • Research in America after the War

    Publication Year: 1918 , Page(s): 1723 - 1746
    Save to Project icon | Request Permissions | PDF file iconPDF (2898 KB)  
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • American Engineering Research

    Publication Year: 1918 , Page(s): 1709 - 1721
    Save to Project icon | Request Permissions | PDF file iconPDF (1393 KB)  
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Drum Shapes as Affecting the Mine Hoist Duty Cycle and Motor Rating

    Publication Year: 1918 , Page(s): 1677 - 1708
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3141 KB)  

    The standardization of mine hoists, from an engineering standpoint is considered impossible on account of the wide variation in the conditions and methods under which anthracite coal is mined. The problem of drum shape consists in varying the diameter of different parts of the winding drum so that the load may be accelerated and retarded at the beginning and end of its travel with the minimum cons... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Use of Electric Power in the Mining of Anthracite Coal

    Publication Year: 1918 , Page(s): 1671 - 1676
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1923 KB)  

    This paper gives figures as to the power cost and current consumption of anthracite mines and the reasons for these being in excess of the requirements for bituminous mines. Estimates are also given as to the additional coal that will be released by the electrification of the anthracite mines. Illustrations are included showing representative installations of electric drive. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 110,000-Volt Transmission Line over the St. Lawrence River

    Publication Year: 1918 , Page(s): 1653 - 1670
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3885 KB)  

    The paper deals with some remarkable construction recently completed by the Shawinigan Water & Power Company near Three Rivers, Quebec. The St. Lawrence river is crossed by transmission line wires on a span of 4800 feet, being the longest span in the world. Due to necessities of navigation clearance, the towers are 350 feet high. The preliminary investigation leading to the adoption of this constr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrification of the Montreal Tunnel Zone

    Publication Year: 1918 , Page(s): 1637 - 1652
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3810 KB)  

    The author describes the electrification of the tunnel through Mt. Royal at Montreal which was built to give the Canadian Northern Railway entrance into the heart of the city. The tunnel emerges from the mountain several feet above the level of the city and it is proposed to extend an elevated line at the same uniform grade to connect with the proposed viaduct on the lines of the Harbor Commission... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electric Power Generation in Ontario on Systems of Hydroelectric Power Commission

    Publication Year: 1918 , Page(s): 1607 - 1636
    Save to Project icon | Request Permissions | PDF file iconPDF (5249 KB)  
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electric Motors in the Cement Industry

    Publication Year: 1918 , Page(s): 1531 - 1605
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (8198 KB)  

    This paper has been compiled by the Committee on Industrial and Domestic Power to give general information regarding the different classes of machinery used in the cement industry and the sizes and types of motor best adapted for the work. The paper gives, first, a brief description of the process. This is followed by an outline of the various kinds of machinery used together with data as to power... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electric Welding-A New Industry

    Publication Year: 1918 , Page(s): 1519 - 1529
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (6546 KB)  

    This paper covers a brief review of the uses of electric spot and arc welding in this country prior to the formation of the Electric Welding Committee of the Emergency Fleet Corporation. It compares the status of the art at the present time and emphasizes the developments that have been made in apparatus in the last six months. It treats of the activities of the Welding Committee in applying elect... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of Harmonic Analysis to the Theory of Synchronous Machines

    Publication Year: 1918 , Page(s): 1477 - 1517
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3546 KB)  

    It is shown that the flux distribution in the air gap of a synchronous machine consists of a series of component distributions that are simple harmonic wave trains, either stationary or moving at constant velocities. Methods are suggested for determining the effects of slots and the saturation of the magnetic circuit on the magnitudes of these component distributions. Expressions for the voltage g... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Economic Proportion of Hydroelectric and Steam Power

    Publication Year: 1918 , Page(s): 1471 - 1475
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (463 KB)  

    This paper describes a new method of determining for any power system, what proportion of generation should be hydroelectric, and what steam, from the standpoint of economics. A method is outlined for obtaining a curve showing ``Total cost per kilowatt-year for hydroelectric and steam power'', for any percentage combination of generation. With system load curve, fixed charges on steam and hydroele... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetic Pull in Electric Machines

    Publication Year: 1918 , Page(s): 1425 - 1469
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | PDF file iconPDF (4032 KB)  
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Critical Review of the Bibliography on Unbalanced Magnetic Pull in Dynamo-Electric Machines

    Publication Year: 1918 , Page(s): 1417 - 1424
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | PDF file iconPDF (602 KB)  
    Freely Available from IEEE
  • A Direct-Current Generator for Constant Potential at Variable Speed

    Publication Year: 1918 , Page(s): 1405 - 1415
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1002 KB)  

    The standing of this problem in the past is briefly reviewed. As far as is known to the author the type of machine described presents a new solution, the advantages of which are shown to be: 1. The machine is self-excited, i. e., regulates independent of any other source of potential. 2. The machine regulates independent of speed and load and may be compounded. 3. The regulation is inherent, i.e.,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Skin Effect in Tubular and Flat Conductors

    Publication Year: 1918 , Page(s): 1379 - 1403
    Cited by:  Papers (43)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1633 KB)  

    A method is presented for calculating the skin effect resistance ratio of a tube, which is a form of conductor to be recommended for high-frequency work. A formula is also developed by means of which the asymptote to the curve of the ratio R??/R may be drawn, and thus the magnitude of the skin effect at extremely high frequencies may be obtained. The values of the ratio R??/R for tubes of various ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Automatic Hydroelectric Plant

    Publication Year: 1918 , Page(s): 1367 - 1378
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (5254 KB)  

    The automatic hydroelectric generating station of the Iowa Railway and Light Company at Cedar Rapids, Iowa, is a radical step in advance in the elimination of operator's wages in a station of appreciable size, without sacrificina complete control. This station consists of three 400-kw., 500-kv-a., 60-rev. per min., 2300-volt, vertical generating units, tied in to a system, of which the main genera... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Protection from Flashing for Direct-Current Apparatus

    Publication Year: 1918 , Page(s): 1341 - 1365
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (11952 KB)  

    The equipment developed for the protection of direct-current apparatus as described in this paper is applicable to all direct-current apparatus and all methods of operation. Special means of protection for use only with particular apparatus or conditions of operation have not been mentioned. The principal steps in the experimental development of high-speed circuit breakers and flash barriers are b... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reactance of Synchronous Machines and its Applications

    Publication Year: 1918 , Page(s): 1209 - 1340
    Cited by:  Papers (27)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (13571 KB)  

    Part I treats of the calculation and application of the armature self-inductive reactance of synchronous machines. A short, reliable method is given in the form of curves, Figs. 20A, B, C, making the calculation from design sheet data a matter of a few minutes. Table I shows a comparison of calculated and test values (obtained from saturation and synchronous impedance curves) for 138 machines, ran... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Sustained Short-Circuit Phenomena and Flux Distribution of Salient-Pole Alternators

    Publication Year: 1918 , Page(s): 1141 - 1208
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (5647 KB)  

    It is shown in Section IV that with the ordinary field forms met with in practise, the resultant flux wave under s. s. c. (sustained short circuits) will be extremely distorted, see Figs. 16, (4th wave) 23, 27, 27A, etc., for the simple reason that with the very low voltages obtained under such conditions, the fundamental of the B-curve of the field is reduced so much by the armature reaction that... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Method of Symmetrical Co-Ordinates Applied to the Solution of Polyphase Networks

    Publication Year: 1918 , Page(s): 1027 - 1140
    Cited by:  Papers (189)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (7741 KB)  

    In the introduction a general discussion of unsymmetrical systems of co-planar vectors leads to the conclusion that they may be represented by symmetrical systems of the same number of vectors, the number of symmetrical systems required to define the given system being equal to its degrees of freedom. A few trigonometrical theorems which are to be used in the paper are called to mind. The paper is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pre-Charged Condensers in Series and in Parallel

    Publication Year: 1918 , Page(s): 1015 - 1025
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (953 KB)  

    A condenser is charged from a source of direct voltage, and then is used as a booster in series with this source to charge another condenser. By repeating this process a large number of times the second condenser is finally subjected to twice the voltage of the source. This is the principle of the Delon apparatus for testing cables, and is explained in a numerical example. Then the more general ca... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.