. Effective resistance and inductance of iron and bimetallic wires . cies. TABLE 8 Comparison of Observed and Computed Values of Effective Resistance and Inductanceof Iron Wires for Zero Current Resistance Internal inductance Wire Permea-bility Frequency Observed Computed Observed Computed 500 4 78 1000 1 3000 f 500 4Steel 94 1000 3000 f 500 98 1000 3000 500 8 Steel 90 1000 1 3000
. Effective resistance and inductance of iron and bimetallic wires . cies. TABLE 8 Comparison of Observed and Computed Values of Effective Resistance and Inductanceof Iron Wires for Zero Current Resistance Internal inductance Wire Permea-bility Frequency Observed Computed Observed Computed 500 4 78 1000 1 3000 f 500 4Steel 94 1000 3000 f 500 98 1000 3000 500 8 Steel 90 1000 1 3000 [ . 500. 93 1 1000 I 3000 f 500 10 Steel 90 J 1000 1 3000 248 Bulletin of the Bureau of Standards iVoi. 12 3. EQUIVALENT PERMEABILITY—EFFECTS OF HYSTERESIS The values of equivalent permeability were computed in themanner outlined on page 230. The values shown in the curves ofFigs. 19 and 20 were calculated from the measurements upon the 1600. 0IZ3456789I0 Current^in Amperes Fig. 19.—Equivalent permeability from resistance data No. 4 E. B. B. wire. They are characteristic of the curves ob-tained for the other wires. It will be noted that the permeabilitiescalculated from resistance data reach extremely high values for500 cycles, while at the same frequency the values obtained fromthe inductance data are low. From this we can obtain some Miller] Effective Resistance and Inductance 249 interesting deductions with respect to the role played by hysteresisin determining the effective resistance and inductance of the energy loss due to hysteresis increases the effective resist-ance of the conductor. Let us first assume that the distributionof current in the wire is unaltered as the frequency the loss of energy per cycle would be a constant; the loss persecond would increase proportional to the frequency. In such acase the resistance wou
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