Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 266
resis, a closed magnetic circuit of rectangular shape builtup of four cores composed of the iron orsteel to be investigated. To obtain a goodcommercial average value, the apparatus isconstructed to take a 10-kg sample, whichshould be made up from at least four dif-ferent sheets. The length of the… … Epstein Hysteresis Tester structed on press-spahn bobbins with internaldimensions of 38 mm x 38 mm, and have a 548 Tester — Testing Armatures length of 435 mm. Each of the four bob-bins contains 150 turns of copper of a crosssection of 14 sq mm, and it is recommendedthat this section be made up of…
Electrical engineering
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