Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 63
ity of the bar magnets in diagram B so that theplungers are pulled into the solenoid. If the current in the solenoid is now reversed, the magneticfield of the solenoid will reverse but, since the induced polarityof the plungers will also reverse, the direction of the pull on theplungers will be… … A B . , ■n f f 1 ^ . J J J J u 1 i Fig. 45. Fig. 46. Diagrammatic representation of electric hammers. . In Fig. 45, current passed through coil C makes the iron plungerinto a magnet with the polarity as shown. If now a current I ispassed through coils A and B in the direction indicated by…
Electrical engineering
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