Transactions of the American Institute of Electrical Engineers, Band 28American Institute of Electrical Engineers., 1909 "Index of current electrical literature" Dec. 1887-1890 appended tov. 5-7. |
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Seite 3
... such low temperatures in the windings as to indicate that the material was not being used at or near the maximum effectiveness . It may be instructive to trace briefly the history of 1909 ] 3 THOMSON : LIGHTING CIRCUITS.
... such low temperatures in the windings as to indicate that the material was not being used at or near the maximum effectiveness . It may be instructive to trace briefly the history of 1909 ] 3 THOMSON : LIGHTING CIRCUITS.
Seite 17
... maximum with zero current , while in the series field arc machine , except for residual magnetism , zero current corresponds to zero potential . Were , however , the primary and secondary coils . of the transformer allowed to come too ...
... maximum with zero current , while in the series field arc machine , except for residual magnetism , zero current corresponds to zero potential . Were , however , the primary and secondary coils . of the transformer allowed to come too ...
Seite 18
... maximum . In the more recent work with magnetite arcs and with lamps having electrodes which , for satisfactory operation , demand the employment of direct current , there was at one time a tendency to return to the use of motor ...
... maximum . In the more recent work with magnetite arcs and with lamps having electrodes which , for satisfactory operation , demand the employment of direct current , there was at one time a tendency to return to the use of motor ...
Seite 20
... maximum and cur- rent values may rise to the proportions of a destructive short- circuit . If the regulating mechanism of the lamp extends the arc or the reverse in response to current variations , a violent surging or oscillation with ...
... maximum and cur- rent values may rise to the proportions of a destructive short- circuit . If the regulating mechanism of the lamp extends the arc or the reverse in response to current variations , a violent surging or oscillation with ...
Seite 30
... maximum output a variation in the length of spark has very little if any effect upon the current output of the ma- chine . If the machine is still further loaded , the brushes move backward , and if the spark is lengthened out the 30 ...
... maximum output a variation in the length of spark has very little if any effect upon the current output of the ma- chine . If the machine is still further loaded , the brushes move backward , and if the spark is lengthened out the 30 ...
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Häufige Begriffe und Wortgruppen
abwatts abwatts per cm alternating alternating current alternating-current amperes apparatus approximately armature brushes capacity Carnot cycle circuit coal coils commutator condenser connected constant copper copper loss core loss cost curve cycles cylinder degrees cent diagram diameter direct current direct-current effect efficiency electromotive force energy field flux density form-factor frequency give heat high-tension hysteresis increase induction motor industrial installed insulation invention inventor iron lamps leakage linear load machine manufacturing maximum mechanical method mill obtained operation outdoor output paper patent system phase plant power-factor practical pressure reactance regulation repulsion motor resistance rotor secondary short-circuit shown in Fig shows shunt single-phase station stator steam steel Steinmetz switches synchronous speed temperature terminal thermodynamic efficiency three-phase tion torque transformer transmission line unbalance unbalancing velocity voltage voltmeter volts water-power wattmeter winding wire Y Y axis
Beliebte Passagen
Seite 343 - As to the suggestion that competitors were excluded from the use of the new patent, we answer that such exclusion may be said to have been of the very essence of the right conferred by the patent, as it is the privilege of any owner of property to use or not to use it, without question of motive.
Seite 564 - The torque of an induction motor varies as the square of the applied voltage and of a synchronous reluctance motor as approximately the 2 1/2 power of the voltage.
Seite 318 - ... made of the sole working or making of any manner of new manufactures within this realm, to the true and first inventor and inventors of such manufactures, which others at the time of making such letters patent and grants shall not use, so as also they be not contrary to the law, nor mischievous to the State by raising of prices of commodities at home, or hurt of trade, or generally inconvenient...
Seite 317 - I will show you how the judges have heretofore allowed uf monopoly patents — which is that when any man by his own energy and industry or by his own charge and industry, or by his own wit or invention doth bring any new trade into the realm, or any engine tending to the furtherance of a trade . . . that never was used before, and that for the good of the realm...
Seite 175 - concurrent development of the streams and their sources for every useful purpose to which they may be put," as it is stated in the "declaration of principles" of the recent North American Conservation Conference, all engineers will agree that each stream should be studied with reference to its possibilities "for domestic and municipal supply, irrigation, navigation, and power, as interrelated public uses." But the development of a plan economically sound calls for unbiased consideration and fairly...
Seite 343 - And another fact may be mentioned. In some foreign countries the right granted to an inventor is affected by non-use. This policy, we must assume, Congress has not been ignorant of nor of its effects. It has, nevertheless, selected another policy; it has continued that policy through many years. We may assume that experience has demonstrated its wisdom and beneficial effect upon the arts and sciences. From the character of the right of the patentee we may judge of his remedies.
Seite 166 - Putnam, of New York, and the results set forth in an interesting paper on " Conservation of Power Resources,"* presented by him at the conference on the Conservation of Natural Resources, held at the White House, May 13-15, 1908.
Seite 173 - The paramount use should be that of water supply; next should follow navigation in humid regions and irrigation in arid regions. The development of power on the navigable and source streams should be kept subordinate to the primary and secondary uses of the waters; though other things equal, the development of power should be encouraged, not only to reduce the drain on other resources, but because properly designed reservoirs and power plants retard the run-off and so aid in the control of the streams...
Seite 319 - to promote the progress of science and the useful arts, by securing for limited times, to authors and inventors, the exclusive right to their respective writings and discoveries...
Seite 88 - Explain why the specific heat of a gas at constant pressure is greater than the specific heat at constant volume.