Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 72
ing,box there will be a current of 11 amperes flowing through aresistance of 8 ohms and the power consumed will be equalto 1- R, or 968 watts, which are lost in heat producedin the resistance wire. As this amounts to more than onehorsepower thrown oJff in heat the advisability of mountingthe… … —WVWWH o Figure 33 will be seen that the resistance coils are in series with thearmature circuit. As the arm A is moved to the right, resist-ance is gradually cut out of the armature circuit until thearm reaches the last point, where it is automatically held in 70 MODERN ELECTRICAL CONSTRUCTION.…
Electrical engineering
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