Determinazione delle curve di corrente e di potenza della candela dell'arco di corrente alternata sotto tensione impressa di varie forme d'onda . 1 11.1 294.4 30.2 4575. 67,5 39,7 14,5 294,1 30,5 4600. 75,0 42,5 8,0 286,4 38,2 2720. 82,5 33,1 9,2 258,9 65,7 750. 90.0 33.3 21.2 276.8 47.8 1610. 97.5 31.9 22.6 290.4 34.2 3475. 105.0 39,2 23,2 285,9 38,7 2625. 111.2.6 33.1 31.7 282.1 42.5 2120. 120.0 31.3 24.6 282.3 42.3 2150. 127.5 20.8 17.9 283.8 40.8 2325. 135.0 37.7 4.9 294.3 30.3 4540. 142.5 45.8 .2 296.5 28.1 5350. 150.0 24.8 .1 294.6 30.0 4625. 157.5 76.5 .1 297.3 27.3 57C0. 165.0 63.8 .1 295.8 28.8 5050. 172

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Determination of current and candle power curves of the alternating current arc under impressed voltage of various wave forms . 1 11.1 294.4 30.2 4575. 67.5 39.7 14.5 294.1 30.5 4600. 75.0 42.5 8.0 286.4 38.2 2720. 82.5 33.1 9.2 258.9 65.7 750. 90.0 33.3 21.2 276.8 47.8 1610. 97.5 31.9 22.6 290.4 34.2 3475. 105.0 39.2 23.2 285.9 38.7 2625. 112.6 33.1 31.7 282.1 42.5 2120. 120.0 31.3 24.6 282.3 42.3 2150. 127.5 20.8 17.9 283.8 40.8 2325. 135.0 37.7 4.9 294.3 30.3 4540. 142.5 45.8 .2 296.5 28.1 5350. 150.0 34.8 .1 294.6 30.0 4625. 157.5 76.5 .1 297.3 27.3 57C0. 165.0 63.8 .1 295.8 28.8 5050. 172.5 58.0 0. 293.8 30.8 4375. 180.0 0. 0. 291.4 33.2 37C0. Hesistanc e over which current drop was taken - .325 ohms. 35 THE E. M. P. lUYK OF THE WESTIKGHOUSE ALTERNATOR #2441 DATA.Magnetic Degrees Instantaneous Voltage 0 0 4 6 6 12 12 15 16 19 ao 24 24 30 28 35 32 44 36 52 40 58 44 64 48 74 5E 8S 56 99 60 118 64 135 68 154 72 171 76 186 80 195 84 201 88 203 9£ 202 96 198 100 193 104 184 108 166 112 150 116 132 120 114 124 100 128 85 1S2 70 156 63 140 57 144 46 148 35 162 32 156 26 160 EO 164 13 168 11 172 7 176 3 180 -2 d. 37 THE .iRC FROL: ^ FLLT TOP .7^VE. IThe flat top v/ave of E. LI. F. is in modern praooioeprolDably the one wtLich is most desired for lighting sys-tems. This results from the faot that it may be easilyadapted to all classes of woi-k and especially for longdistance transmission. ^s compared to the peaked wave, the light given out from an arc operated on a flat wavewould be expected to be steadier and of a more desirablequality. A generator giving a flat top wave was used l;osupply the arc under test and the results obtained followto some extent in a general way those obtained from thepeaked wave previously discussed. Some difficulty v/asencountered in obtaining a candle power curve from whichany conclusions could be drawn. The generaoor used to r-ive the flat top v/ave isa General Electric three phase machine v;ith a normal volt-age of 1S6 at ISOO revolutions

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1900
• bookiddeterminatio
• bookyear1905