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- · New York, T. Audel · leaf 272
required to operate the motor at full speed withno resistance in circuit be less than the rated capacity of the OPERATION OF MOTORS 091 rheostat no overheating will occur, but it will not be possible tosecure the full 50 per cent, speed reduction the rheostat is de-signed to give with all… … IG. 768.—Various sizes of Watson commutator. The segments are punched from hard drawncopper strip and are insulated from each other and the core by amber mica, of hardnesscorresponding to that of the copper in order that the wear of mica and copper may beimiform. The segments are assembled in a…
Electrical engineering
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