. Electric railway journal . liail Rail INDUCED VOLTAGE IN THIRD RAIL FIG. 2—DIAGRAM OF RAIL AND TEST COIL ARRANGEMENT dent with the axes of the rails. The fluxes calculated onthe basis of the foregoing assumptions and with the railarrangement indicated in Fig. 2 are tabulated in Table[. The rails weighed 55 lb. per yard, were 4 in. highand had a cross-section of sq. in. Measurement of Actual Fluxes The actual fluxes were measured by means of testcoils, arranged as in Fig. 2, and a ballistic rail circuit is shown in Fig. 3. For the purpose of Generator. J Oscillo
. Electric railway journal . liail Rail INDUCED VOLTAGE IN THIRD RAIL FIG. 2—DIAGRAM OF RAIL AND TEST COIL ARRANGEMENT dent with the axes of the rails. The fluxes calculated onthe basis of the foregoing assumptions and with the railarrangement indicated in Fig. 2 are tabulated in Table[. The rails weighed 55 lb. per yard, were 4 in. highand had a cross-section of sq. in. Measurement of Actual Fluxes The actual fluxes were measured by means of testcoils, arranged as in Fig. 2, and a ballistic rail circuit is shown in Fig. 3. For the purpose of Generator. J Oscillograph INDUCED VOLTAGE IN THIRD RAIL—FIG. 3—RAIL CIRCUITS ANDOSCILLOGRAPH CIRCUIT FOR MEASURING VOLTAGE comparison, the measured fluxes are also recorded inTable I. It will be noted that the first assumption as torail cross-section gives results which compare very December 15, 1917] ELECTRIC RAILWAY JOURNAL 1073
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