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Electrical Engineering

Issue 7 • July 1940

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Displaying Results 1 - 25 of 34
  • [Front cover]

    Publication Year: 1940, Page(s): c1
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  • [Advertisement - Front inside cover]

    Publication Year: 1940, Page(s): c2
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  • [Advertisements]

    Publication Year: 1940, Page(s):1 - 4
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  • Contents

    Publication Year: 1940, Page(s): 1
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  • Highlights

    Publication Year: 1940, Page(s): 260
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  • Fluorescent lighting after two years

    Publication Year: 1940, Page(s):261 - 266
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    After two years in service, the fluorescent lamp has definitely established itself as a new tool for the illumination engineer that will supplement, but not supplant, other light sources NEW in theory, design, and appearance, the fluorescent lamp was introduced some two years ago to the public and the illuminating-engineering profession at almost the same instant, giving the latter little time to ... View full abstract»

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  • Electricity in the united states navy

    Publication Year: 1940, Page(s):267 - 270
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1471 KB)

    Electricity is used in the Navy as universally as on shore, and plants of 10,000-kw capacity are being installed on capital ships; much greater capacity, of course, is required where electricity is used for propulsion ELECTRICITY is used on board ship for many purposes; for example, radio, interior communication, cooking, heating, lighting, steering, ventilation, and for training, elevating, and f... View full abstract»

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  • Power preparedness

    Publication Year: 1940, Page(s):270 - 271
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    The electric-power industry of the United States is said to be capable of meeting any national emergency calling for more power capacity PREPAREDNESS for war-time power supply or preparedness for war in any other respect, does not mean expectancy of war or desire for war. But just as one takes out a fire-insurance policy as a protection against what he knows may happen but hopes will not, so it is... View full abstract»

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  • The Ionosphere

    Publication Year: 1940, Page(s):272 - 283
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9453 KB)

    SOME YEARS AGO there was a flood of books bearing such titles as “The Doctor Looks at Love”, “The Lawyer Looks at the Law”, “The Poet Looks at Civilization”, etc., etc. I might have followed their precedent by naming this lecture “The Physicist Looks at the Ionosphere”. Better would have been to say “The Physicist Listens to the Ionosp... View full abstract»

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  • Of current interest: Other societies

    Publication Year: 1940, Page(s): 284
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  • Employment service incorporates; Opens new regional office

    Publication Year: 1940, Page(s):284 - 287
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  • Institute activities: Pacific Coast convention will combine technical and recreational features

    Publication Year: 1940, Page(s):288 - 289
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  • Report of the board of directors

    Publication Year: 1940, Page(s):290 - 304
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  • District: Seven districts announce prize awards for papers

    Publication Year: 1940, Page(s):304 - 305
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  • Branch

    Publication Year: 1940, Page(s):305 - 306
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  • Standards: Institute policy concerning standardization activities

    Publication Year: 1940, Page(s): 306
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  • Personal

    Publication Year: 1940, Page(s):306 - 308
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  • Obituary

    Publication Year: 1940, Page(s):308 - 310
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  • Membership

    Publication Year: 1940, Page(s): 310
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  • The application of traction motors

    Publication Year: 1940, Page(s):369 - 374
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    The application of traction motors is based fundamentally on speed-time curve calculations. This method has been used for many years and is familiar to electrical engineers engaged primarily in transportation activities. Many other engineers infrequently encounter problems of traction-motor application but are not conversant with the effect which variations in service conditions produce on vehicle... View full abstract»

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  • A new postgraduate course in industry in high-frequency engineering

    Publication Year: 1940, Page(s):374 - 380
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    THOSE FIELDS of engineering which utilize high-frequency electric currents and electronic devices have long ago graduated from the trial and error stage. The empirical experimenter who is ingenious and observant will always be useful, especially in some new and fruitful phase of the art not yet well understood. However, reliance has for many years been placed upon the ability of the engineer to de... View full abstract»

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  • Condensation of mercury in mercury-arc tubes

    Publication Year: 1940, Page(s):381 - 384
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    It is found experimentally that the efficiency of condensation of mercury vapor on cold metal surfaces is quite low. The condensing efficiency of steel surfaces is increased several fold by positiveion bombardment of the surface. Nickel surfaces condense mercury vapor several times as efficiently as steel. The operation of a high-voltage ignitron rectifier was greatly improved by positiveion bomba... View full abstract»

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  • Electric power for airplanes

    Publication Year: 1940, Page(s):385 - 388
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    Electric-power loads are increasing rapidly on airplanes and auxiliary-engine-driven generators offer dependable power sources independent of main engines. Minimum weight for the required capacity is essential in the design of generators, motors, and control. The a-c 110-volt 400-cycle three-phase system has been developed for large airplanes with heavy motor loads. Alternators rating 12.5 kva at ... View full abstract»

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  • Some impulse-voltage breakdown tests on oil-treated paper-insulated cables

    Publication Year: 1940, Page(s):389 - 393
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    Data are presented on impulse-voltage breakdown values obtained on oil-treated paper-insulated cables over the insulation thickness range from 0.187 inch to 0.600 inch. The average stress at breakdown approximates 1,600–1,700 volts per mil. High-density papers show some superiority over ordinary-density papers. Cathode-ray oscillograms of the testing wave (1½x40 impulse wave —... View full abstract»

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  • Impulse strength of cable insulation

    Publication Year: 1940, Page(s):394 - 402
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3860 KB)

    INSULATED CABLES often are exposed to lightning and often have been damaged by lightning, especially rubber- or cambric-insulated cables of medium or lower voltage. It is also true that some service trouble has been improperly attributed to lightning. Knowledge of the impulse strength of cable insulation is necessary to analyze such cases correctly and to minimize lightning trouble by proper cable... View full abstract»

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Aims & Scope

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

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