Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 150
to gain a knowledge of its appioximate resistance. Forthis purpose the 100-ohm plug is withdrawn from both arms M … Fig. IS. and X, the unknown resistance being connected at A. The ratiosof J/to A will then be unity, and hence for a balance the numberof ohms required in the resistance coils P will be the same as theresistance X. The 1,000-ohm plug in P should first be drawn andthe keys depressed in their proper…
Electrical engineering
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