Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 132
f wire on armature in metres,p = number of pairs of poles, andA = cross-section of wire in sq. mm,the resistance of one path between two brushes of opposite sign will be ^ .. Since there are 2p such paths in parallel the resistance of the whole armature will be 2p times as small, that is, p.I R.=… … Fig. 104 in 2p parts, the current in each coil is relatively small, viz. Ijzp. Let us.consider, as an example, a 4-pole machine for no volts and 100 amperesarmature current. If the total length of wire on the armature is 200 metresand its cross-section 10 sq. mm we have, since p = 2, p.I _ 002 .200…
Electrical engineering
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