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 2
... efficiency machines of moderate capacity . In such cases each slight increment of speed raises the potential and ... efficient field circuit , and in a com- pounded machine the curve of potential regulation may not be so flat . It is ...
... efficiency machines of moderate capacity . In such cases each slight increment of speed raises the potential and ... efficient field circuit , and in a com- pounded machine the curve of potential regulation may not be so flat . It is ...
Seite 5
... efficient machine for an equal energy output , and a better design if it had to work over dead resistance , but one which with an arc for its external work or load would not attain stability in cur- rent until the value was so large as ...
... efficient machine for an equal energy output , and a better design if it had to work over dead resistance , but one which with an arc for its external work or load would not attain stability in cur- rent until the value was so large as ...
Seite 7
... efficiency in the dynamo itself could be reached , the system gradually went out of use . It is readily seen that where the arcs were so short as to be only incipient arcs , the regulating effect of the series magnets of the lamp ...
... efficiency in the dynamo itself could be reached , the system gradually went out of use . It is readily seen that where the arcs were so short as to be only incipient arcs , the regulating effect of the series magnets of the lamp ...
Seite 8
... efficiency , etc. , was then satisfactory . On account of the relatively high duty of the machine , less weight of wire and cost , it became actually a debatable point . whether the supersensitive regulating lamp might not be shut up in ...
... efficiency , etc. , was then satisfactory . On account of the relatively high duty of the machine , less weight of wire and cost , it became actually a debatable point . whether the supersensitive regulating lamp might not be shut up in ...
Seite 9
... efficiency , but when attained was sufficient to render the circuit independent of any ad- justment of arc length by the magnets of the lamps , except that of feeding as the arcs were lengthened by consumption of carbons . The actual ...
... efficiency , but when attained was sufficient to render the circuit independent of any ad- justment of arc length by the magnets of the lamps , except that of feeding as the arcs were lengthened by consumption of carbons . The actual ...
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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
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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.