. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . edon sheets especially prepared forthe purpose. The data were immedi-ately put into graphical form, as thisbest made possible a comparison of thevarious elements. It was foimd, inpart, to be unnecessary to prepareelaborate tables from the data, as thegraphical presentation renders the in-formation accessible and the detectionof error easy. Unfortunately, it hasbeen found impracticable to includeall of the graphical results in theReport. The charts for the rail sec-tions are included, but on
. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . edon sheets especially prepared forthe purpose. The data were immedi-ately put into graphical form, as thisbest made possible a comparison of thevarious elements. It was foimd, inpart, to be unnecessary to prepareelaborate tables from the data, as thegraphical presentation renders the in-formation accessible and the detectionof error easy. Unfortunately, it hasbeen found impracticable to includeall of the graphical results in theReport. The charts for the rail sec-tions are included, but only selectedtabular results are given for the specialsections. Results of the Tests. Test No. 38. Fifty-Six Pound Tee-Rail. — This rail hasa cross-section as shown in Fig. 119, an area of square inches,and a weight of 56 lbs. per yard. The distance between thecontact points was ft. Table LVII shows the magnetic properties of this rail, thetests of magnetic properties having been made for the ExecutiveCommittee through the courtesy of Professor J. W. Shuster andthe University of Fig. 117. — Vector Diagram of ThreeVoltmeter Power C. Rail Tests. 402 ELECTRIC RAILWAY TEST COMMISSION Table LVII. — Test No. 38. — Magnetic Properties of Fifty-Six Pound Tee-Rail, B. H. M. 2,000 353 4,000 547 6,000 635 8,000 672 10,000 621 11,000 564 13,000 468 14,000 418 15,000 352 16,000 275 16,480 —1 ^ 248 Date 3504 Data sheet NOi •ELECTRIC RAILWAY TEST COMMISSION _^ Log and calculations of Tests to determineXOSSES IN STEEL BAILS witb. Alternating CvTrrent / Eail Data ^Material Length ft Shape Area ^ Weight per yd, .-_ lbs. RESISTANCE and Temp. Coeflf. Amp. volts Temp Temp. Co. A. VOLTS AMP Watts PowerFactor A. in rail Total Total Instruments used: OBSERVERS Fig. 118. —Blank Form for Taking A. C. Rati Test Data, ALTEMAT
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