Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 283
, in whichcase the bearing should be refitted or renewed. Cause 5. Singing or hissing of brushes. This is usuallyoccasioned by rough or sticky commutator (see Trouble I, Causes3 and 10), or by brushes not being smooth, or by the layers of acopper brush not being held together in place. With… … WATER-PUMP EQUIPMENT DRIVEN BY FORT WAYNE FRACTIONAL HORSE-POWER MOTOR Courtesy of Fort Wai/>ie Electric Works MANAGEMENT OF DYNAMO-ELECTRIC MACHINERY 129 ally, a new machine will make a noise that is reduced after themachine has been run for some time. Symptom. Sounds of high pitch are easily…
Electrical engineering
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