Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 38
machinery is given in Fig. 13. Effect of Air Gap in Magnetic Circuit. Thus far the magneticcircuit has been considered as made up of a solid, endless ring ofiron. But suppose it to be builtup partly of iron and partly ofsome non-magnetic material, asair or copper. Then the totalreluctance of the… … R = A^i ^i P-a-^a Fig. 14. Effect of Air Gap on Mag-netization in which {i and A are, respectively, the permeability and the cross-sectional area of the materials denoted by the subscripts. HIT rep-resents the ampere-turns, the total flux of such a circuit i,s 1.257/T a> = k + k Pi ^i Pa, -^a 28…
Electrical engineering
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