Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 175
la 9 g »h g 3 r, C CO S,Q S CO O w J .. . fr*■< ... p« & gMg•S„-8g| r=s°° -bo£ C _ca ^ &JSB-g *S2 .38 •+-» -2 t^ rHCO COrt^S .- S8|g|9 MOTORS 387 Ones. What is the object of the commutating fieldproduced by the interpoles? Ans. Its object is to assist commutation, that is, to helpreverse… … Fig. 438.—Interpole motor as built by the Electro Dynamic Co. This type of motor isdevised to prevent sparking at all loads by the use of interpole magnets, that is, smallmagnets placed between the field magnets. The interpoles set up a field in a direction tostop and reverse the current in the…
Electrical engineering
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