. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . P P. 120,000 100,00080,00060,00040,000 F i AR CO 4i) Fre que icy / h CD 2515 ^ n E 0 II 1 , ,D / rB 1// A V / / /* / / [/ ^ € ^ ^ fiOOAmperefi 0 Fig. 154. — Variation of Pressure Drop withTotal Current. Single Rail and SingleTrolley. »p. do 5. 400 SOOAmperes Fig. 155. — Variation of Power Lost with TotalCurrent. Single Rail and Single Trolley. -- — -o- • y^ ■if- 0 ^ ^ ^ ^c ^ ^ o— n AB SO rto •eqi enc f I % :: _. 100 20O 400 300of Ratio. Fig. 156. — Variation Single Rail and Single Tracli. 5
. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . P P. 120,000 100,00080,00060,00040,000 F i AR CO 4i) Fre que icy / h CD 2515 ^ n E 0 II 1 , ,D / rB 1// A V / / /* / / [/ ^ € ^ ^ fiOOAmperefi 0 Fig. 154. — Variation of Pressure Drop withTotal Current. Single Rail and SingleTrolley. »p. do 5. 400 SOOAmperes Fig. 155. — Variation of Power Lost with TotalCurrent. Single Rail and Single Trolley. -- — -o- • y^ ■if- 0 ^ ^ ^ ^c ^ ^ o— n AB SO rto •eqi enc f I % :: _. 100 20O 400 300of Ratio. Fig. 156. — Variation Single Rail and Single Tracli. 500 Amperes 0 100 200 300 400 500 Amperes G. Drop Fig. 157. — Variation of Power Factor. SingleRail and Single Track. D. C. Drop general manner as were the preceding ones, the data for a givenfrequency being plotted in a single curve in each case. Fig. 150shows the pressure drop per mile of track, Fig. 151 shows the ALTERNATING CURRENT LOSSES IN TRACK 449 power losses per mile, Fig. 152 shows the ratios of the pressure drop, and Fig. 153 shows the power No. 50. Single Rail and Single Trolley. — The
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