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Electrical Engineering

Issue 11 • Date Nov. 1951

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Displaying Results 1 - 25 of 57
  • [Front cover]

    Page(s): c1
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    Freely Available from IEEE
  • Contents

    Page(s): c2
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  • Contents

    Page(s): 1A
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  • [Advertisement]

    Page(s): 2A
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  • Hightlights

    Page(s): 3A
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  • [Advertisement]

    Page(s): 4A - 12A
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  • Engineering manpower convocation: Reflected light is not enough

    Page(s): 947 - 949
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    The purpose of the Convocation was to inform the engineering profession of the country about the critical shortage of engineers and the program of the Engineering Manpower Commission and to invoke widespread co-operation in carrying it out. View full abstract»

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  • Engineers: A vital resource in critically short supply

    Page(s): 949 - 950
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    THE AMERICAN PEOPLE recognize that their country has a tremendous capacity to produce goods of all kinds. They have seen this country turn out prodigious quantities as materiel for support of its Army, Navy, and Air Force and for the support of its allies in defending the world against the destruction of democracy. The people have great faith in the country's power to produce. This power hinges upon the scientific and technical know-how through which the abilities to design, research, produce, and properly operate the vast wheels of industry, come about. The country witnessed a great development of its scientists and engineers during World War II. It came to realize that great dependence was placed upon the achievements of these men in the final winning of the war. View full abstract»

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  • Government agencies and policies

    Page(s): 950 - 953
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    IT SHOULD BE CLEAR from what has already been said today that the major problems confronting the nation are in the field of manpower or are closely related to manpower. It is also true that in the manpower field the problem is most acute and has its greatest impact for the age groups coinciding with the age of college attendance. This makes the present manpower crisis extraordinarily important for the future because the actions which are taken to solve these problems will have their major effects not so much now as in the future–5 and 10 and 20 or more years from now. It is not too much to state that an unwise resolution of these problems could fundamentally alter the nature of our civilization and dissipate its essential strength to the point where it will be extremely vulnerable in any future conflict. View full abstract»

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  • A program for the engineering profession

    Page(s): 953 - 955
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    BEYOND THE NECESSITY for technological preparedness in the military sense, the engineering profession is faced with the challenge of increasing the productivity of industry and improving the material standard of living. Either in itself constitutes a ringing challenge, but when the two are superimposed the necessity for aggressive attack upon the problem becomes even greater. In this period of our history it is not merely essential that technology develop and produce the weapons and equipment essential to the maintenance of military superiority, but that, at the same time, it carry out its major share in the development and production of articles of such attractiveness, usefulness, and serviceability to the civilian economy that the cost of military preparedness can be borne. The wreck of our civil economy would be as disastrous as military defeat. Maintenance of strength in our civil structure as well as in our military establishment is essential. In both, the role of the engineer is a dominant one, supply of engineering manpower is a critical problem, the failure to make full utilization of available engineering skills is a wasteful procedure which must be eliminated. View full abstract»

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  • Protection of electric equipment against corrosion

    Page(s): 956
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    CORROSION OF VITAL PARTS of electric equipment presents a serious problem in many industries which manufacture or use chemicals, or in which corrosive gases, dusts, or liquids are a by-product of the process operations. It is also present in plants located near salt water, in mines, and even in steam-generating plants which use hogged fuel or coal. Corrosion of electric apparatus not only causes high maintenance and operating costs but presents a definite safety hazard. View full abstract»

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  • A central data-recording system for a jet-propulsion laboratory

    Page(s): 957 - 960
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    Recording experimental data from a number of widely dispersed test stations is achieved efficiently in this laboratory by centralizing the recording equipment in a single location. The recording center contains all recording, intermediate, and control equipment which can be combined into any desired system by means of patch cords. View full abstract»

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  • Electricity at work in industry

    Page(s): 960
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  • Power-factor testing for finding insulation values

    Page(s): 961
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    THE DIELECTRIC-LOSS and power-factor method of testing insulation has been in use by many operating companies for almost 20 years for determining when new equipment meets minimum requirements for insulation and to keep equipment in use in good operating condition through adequate maintenance. The equipment for making dielectric-loss and power-factor tests consists of means for supplying a-c potential to insulation and meters, from the readings of which the power factor of the current through the insulation may be determined. This test will detect moisture, dirt, carbon deposits, carbonization of wood and other organic material, corrosion of bushing leads due to corona, and almost all insulation defects. The test is not a destructive test since voltages below operating voltage generally are used. The test sets are sufficiently rugged for field use and can be transported easily. Highly technical personnel are not required to make tests and analyze the results, but test engineers must have common sense, intelligence, and thorough knowledge of the apparatus being tested. View full abstract»

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  • Electron-tube heat-transfer data

    Page(s): 962 - 966
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    The heat-dissipating characteristics, as well as electronic characteristics, determine the successful operation of an electron tube. The tube designer, by means of thermal circuits, can evaluate thermal resistances, determine operating temperatures, and find the heat losses, so that he can provide for adequate ventilation. View full abstract»

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  • Inhibited oils for transformers

    Page(s): 967
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    ALLOWABLE AND actual loadings of transformers of the Commonwealth Edison Company have increased considerably in the past 15 years with consequent rises in transformer temperatures. Oils with improved oxidation stability have gained increased importance, especially for older type transformers in service. An immediate interest developed in inhibited oil when it became commercially available in 1946, and a program of tests was initiated at that time to determine the extent of its superiority. View full abstract»

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  • An engineering approach to control room lighting

    Page(s): 968
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    MODERN CONTROL ROOMS in utility and industrial power stations are nerve centers of multimillion-dollar operations. Lighting for these important work areas can be provided in various ways depending upon what limits are assigned the task. If one considers the medium of lighting as a small but important part of the power plant entity and it is recognized that over-all economy is the result of economical parts, then the search for an adequate lighting scheme narrows considerably. View full abstract»

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  • Industrial plant power sources

    Page(s): 969 - 973
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    Many types of industrial plants can generate their own electricity economically under certain conditions. Such conditions, and various methods for making the most of them, are set forth in this article. View full abstract»

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  • Series capacitors in long transmission lines

    Page(s): 974
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    ONE OF THE most important applications of scries capacitors in long-distance transmission is to increase power capability to the economic maximum. This involves an increase in transient as well as steady-state stability of the transmission facility. View full abstract»

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  • Tensorial analysis of transmission systems

    Page(s): 975
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    A METHOD OF ANALYSIS is outlined to solve steady-state problems arising in the operation of large interconnected transmission systems exchanging power between their own operating divisions and outside companies. Special attention is paid to the calculation of total and incremental losses between the various subsidiary and outside companies. This first part restricts itself to laying the necessary foundations for the numerical study made in a companion paper1 on the system of the American Gas and Electric Company, New York, N. Y. View full abstract»

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  • An unattended broad-band microwave repeater for the td-2 Radio relay system

    Page(s): 976 - 981
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    To meet the stringent requirements of the 4,000-mile transcontinental microwave relay system, a number of new developments had to be included in the design of the repeater stations. The circuits of these unattended stations, and how they are maintained, are the subject of this article. View full abstract»

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  • New single-phase 4-motor equipments for A-C multiple-unit transit cars

    Page(s): 981 - 982
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    Promising appreciable savings in maintenance costs, this equipment has some features new to a-c rapid-transit car design. A truck-mounted motor drives each axle and a cam-operated controller operates the resistance acceleration. View full abstract»

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  • Line-drop compensation on single-phase regulators

    Page(s): 983
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    WHEN SINGLE-PHASE voltage regulators are connected in delta or in open-delta on 3-phase systems, the regulator is excited by the line-to-line voltage, but it transmits line current. For this reason, a line-drop compensator in the control circuit of a regulator so connected has a 30-degree phase difference between its voltage and current supplies. The proper operation of the regulator depends upon the line-drop compensator's duplicating, in the control circuit, the effect of resistance and reactance voltage drops in the line. To permit this, the effect of the 30-degree phase displacement between voltage and current must be counterbalanced. View full abstract»

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  • Dbpc inhibited oil in semisealed transformers

    Page(s): 984
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    WIDESPREAD INTEREST in 2,6 ditertiary butyl para cresol (DBPC) as an inhibitor for transformer oils has resulted in extensive usage, largely based on evaluation by laboratory means. Earlier studies reported in a paper by the authors1 on long operation of small semi-sealed transformers indicated that evaluation in actual transformers was desirable and also that useful information might be obtained from accelerated operation. View full abstract»

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  • Block diagram network transformation

    Page(s): 985 - 990
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    Block diagram networks consisting of linear unidirectional elements form the basis for this simple and direct method of transforming and reducing networks for analysis. Particularly applicable to servomechanisms and control circuits, this method is similar in approach to Y-delta transformation and series-parallel reduction for solving ordinary networks. 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