Word: placing
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Dates: during 1920-1929
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...predict that they will operate indefinitely without electrical break-down, unless the insulation is damaged by some abnormal electrical surge such as lightning strokes, or high voltages induced in the system by short circuits, or arcing grounds. With underground cables, however, the situation is entirely different. In the first place, it is not permissible to carry high-voltage lines into the centers of population because of the danger. Therefore, it becomes necessary to use underground cables. The ordinary high-voltage underground cable is insulated with paper tapes which are thoroughly dried, and then impregnated with insulating oils. This paper insulation...
...primary cause of cables breaking down in service is due to the fact that small voids or air spaces are formed within the paper insulation. With present methods of manufacture, these voids appear to be inevitable. When such voids form, a minute electric discharge takes place within the void; that is, small electric arcs form, and the molecules of air find themselves in an electric field which causes them to attain high velocities. This effect is called ionization. The ions then impinge on the paper and oil, and have the effect of a rapid and continual bombardment. They not only...
...power at extremely high voltages, with very great precision. By means of the bridge, we are determining the electric properties of oils and papers at different temperatures and frequencies, and under different conditions of impregnation. Also, we are investigating the electrical characterisics of the electric discharges which take place in small air spaces...
...result of its victory over the Kappa Nu quintet last night at the Freshman Athletic Building, Falcon Club moved into a triple tie with Kappa Sigma and Sigma Alpha Mu for first place in the Inter-Fraternity Basketball League...
...mile mark was reached the Sophomores had gained the lead, closely followed by the Seniors. At the Harvard Bridge the Senior eight raised the stroke and pulled steadily ahead of the Sophomore crew till they had a length's margin at the finish line. The Juniors took the third place when the Seniors jumped into the lead at the bridge, and dropped behind slowly to finish a little over a length behind the Sophomore eight...