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Electrical Engineering

Issue 2 • Feb. 1942

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

    Publication Year: 1942, Page(s): c1
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  • [Advertisement - Front inside cover]

    Publication Year: 1942, Page(s): c2
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  • [Advertisements]

    Publication Year: 1942, Page(s):1 - 18
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  • Contents

    Publication Year: 1942, Page(s): 1
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  • Highlights

    Publication Year: 1942, Page(s): 66
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  • Electrical features of the 200-inch telescope

    Publication Year: 1942, Page(s):67 - 78
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (15622 KB)

    BRIEFLY, the function of the Palomar Mountain 200-inch telescope is to collect light from celestial objects and concentrate it at the prime focus, or, by a series of additional reflections from auxiliary mirrors, bring the light to other focal points both on and off the telescope. The major advantages of the 200-inch telescope over other large telescopes are: (1) its considerably larger light-gath... View full abstract»

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  • The world's largest telescopes: 200-Inch: Astrophysical observatory of the California Institute of technology, Palomar Mountain, Calif.

    Publication Year: 1942, Page(s): 78
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  • Hybrid electrical porcelain developed

    Publication Year: 1942, Page(s): 79
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (566 KB)

    THROUGH research at the Westinghouse Electric and Manufacturing Company's porcelain plant in Derry, Pa., a new porcelain that combines all the advantages of both the wet and dry processes of manufacture recently has been produced on a commercial scale. Intricacy of shape is combined with high dielectric and mechanical strengths at reasonable cost. View full abstract»

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  • Protective lighting for american industry

    Publication Year: 1942, Page(s):80 - 83
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2422 KB)

    PROTECTIVE lighting is not a new practice grown out of the present war program. It has been in use for the past 25 years and is better known as yard lighting. It has been used by generating plants to prevent raids on the coal pile, in silk mills to prevent theft of valuable merchandise, in automobile factories to prevent theft of storage batteries, tires and other readily saleable parts. Yard ligh... View full abstract»

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  • Heaviside's direct operational calculus

    Publication Year: 1942, Page(s):84 - 88
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (799 KB)

    OPERATIONAL CALCULUS is a very powerful tool for solving the differential equations of engineering. This article discusses some of the basic principles of Heaviside's direct operational calculus and how they can be applied to the solution of engineering problems. No attempt will be made to prove the various expressions that are to be used or to cover completely all the points of interest. The nece... View full abstract»

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  • Automatic control for washing machines

    Publication Year: 1942, Page(s):89 - 92
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2563 KB)

    IN 1940 the American people spent $113,580,000 to buy 1,552,666 household washing machines. That is big business! But the only way the washing-machine industry could become a big business, and the only way it can remain a big business, is by supplying machines that fulfill the users' actual needs and desires. In practice, this means that the industry must anticipate by several years what features ... View full abstract»

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  • Metals for tomorrow

    Publication Year: 1942, Page(s): 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (258 KB)

    Which metals will continue to be used in increasing quantities? Already we are witnessing the phenomenal growth of the light metals. Military planes dictate the expansion of domestic production capacity to 700,000 tons a year for aluminum and 200,000 tons a year for magnesium, representing 5-fold and 100-fold increases compared with the 1937 peak output of the respective metals. When the war is ov... View full abstract»

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  • Institute activities: North Eastern district meeting to include branch convention

    Publication Year: 1942, Page(s):93 - 98
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  • Of current interest: Field offices facilitate war production

    Publication Year: 1942, Page(s):99 - 110
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  • Transactions section: Preprint of corresponding pages from the current annual AIEE transactions volume: High-capacity circuit-breaker testing station

    Publication Year: 1942, Page(s):49 - 53
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4307 KB)

    TEN years' experience with a high-power laboratory, giving approximately 1,100,000 three-phase initial symmetrical kilovolt-amperes on short circuit at the machine bus,1 has defined its usefulness and limitations and has resulted in an addition to its installed equipment. By taking advantage of assymmetry this capacity has been sufficient to demonstrate ratings up to 1,500,000 kva, and ... View full abstract»

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  • Electrical drives or wide speed ranges

    Publication Year: 1942, Page(s):54 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1477 KB)

    THE electrical drive for a wide speed range is obtained by the addition of a rotating regulator called a Rototrol to a conventional variable voltage system. This combination will give a speed range of 120 to 1 or more, and can be used effectively in many industries to simplify the mechanical design of the machine which it drives. Its use eliminates elaborate gear-change mechanism, clutches, and so... View full abstract»

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  • Measurement of maximum demand

    Publication Year: 1942, Page(s):57 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1450 KB)

    “Maximum demand” has become an increasingly important item in rates for the sale of electric service since the appearance of Doctor John Hopkinson's notable paper, “Cost of Electricity Supply,” in the year 1892 — nearly 50 years ago. The writer estimates that the demand-measuring equipment which is now being used by the public utilities of the United States has a... View full abstract»

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  • A new voltage-regulating relay plus line-drop compensator

    Publication Year: 1942, Page(s):63 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (932 KB)

    THERE are numerous applications where it is desired to measure a voltage at one point of a line or feeder by the use of an instrument placed at some other point. The instrument measures the voltage at the point of the line to which it is connected, and also measures the line drop to the remote point. These two measurements are combined so that the resultant indication is the voltage at the remote ... View full abstract»

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  • A static voltage regulator insensitive to load power factor

    Publication Year: 1942, Page(s):67 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1332 KB)

    THE voltage regulator described in this paper is intended for those applications where the operating efficiency is of secondary importance to other requirements. Excluding the consideration of efficiency, the output voltage of an ideal voltage regulator should be of sinusoidal wave form and should remain constant with any variation in input voltage and frequency and any variation in load volt-ampe... View full abstract»

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  • Multichannel carrier-current facilities for a power line

    Publication Year: 1942, Page(s):71 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2190 KB)

    A carrier-current system providing a relatively large number of channels is in service on a high-voltage power line. The facilities provide: 1. Transmission of signals both ways for the opening of the circuit breakers at the remote end by the operation of relays at the near end. 2. Two-way telephone service between any extension telephone at the remote generating station and any telephone connecti... View full abstract»

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  • Relays and breakers for high-speed single-pole tripping and reclosing

    Publication Year: 1942, Page(s):77 - 80
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1065 KB)

    THE advantages of fast reclosing of transmission-line circuit breakers have been realized for a number of years. This experience has been gained on the basis of three-pole reclosures. One step beyond three-pole tripping and reclosure is single-pole operation. It is arranged so that on single phase-to-ground faults only the faulty phase wire is disconnected at each end of the line and then immediat... View full abstract»

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  • High-speed single-pole reclosing

    Publication Year: 1942, Page(s):81 - 87
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    THE first application of high-speed single-pole reclosing to a high-voltage transmission line was recently made, tested, and put in service, on a 50-mile section of 138-kv single-circuit line on the system of the Public Service Company of Indiana, Inc. This paper discusses the reasons for choosing single-pole reclosing, and the installation and field testing of the equipment made under operating c... View full abstract»

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  • Evening courses at graduate levels — A challenge to colleges of engineering

    Publication Year: 1942, Page(s):88 - 93
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1627 KB)

    DURING the past months with the hysteria of war about us and with the nation struggling to convert its peacetime activities into a gigantic war-time arsenal of fighting and defense implements, the most urgent demands have been made for a trained personnel. The present dearth of technically trained workers and skilled artisans has been strongly felt in nearly every phase of this controversion of in... View full abstract»

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  • Resistance-welding transients

    Publication Year: 1942, Page(s):94 - 95
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    This paper discusses quantitatively the effect of indiscriminate (random phase-angle) switching in the primary of a resistance-welding transformer supplying a resistance welder. The current and power transients occurring because of “off-angle” switching are investigated through oscillographic records of transients in loads built up to simulate actual welder-head loads as nearly as po... View full abstract»

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  • Shielding of substations

    Publication Year: 1942, Page(s):96 - 99
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (973 KB)

    AS compared to transmission lines, it is more important that overhead ground wires or vertical masts over substations be correctly located so as to provide shielding of the structure against direct strokes of lightning. In a previously published paper1 the authors discussed the shielding characteristics required for transmission lines. The present paper extends these investigations to t... 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