Poole, Cecil Percy, 1863- · New York : McGraw · leaf 189
mica insulation will not be injured if sparking occurs.Oil and copper dust should not be allowed to accumulate in the air spaces,thus formed, as this would cause a severe short-circuit. i8o DESIGNS FOR SMALL DYNAMOS AND MOTORS Connections are made between the collector rings and commutatorbars with… … Sectiou of Bearing2 Wanted FlG. 221.
Electric generators -- Design and construction · Electric motors -- Design and construction
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