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 217
t out step by step andthen transferred again. By continuing this process a largenumber of steps are provided with but comparatively few actualtaps on the transformer 1,736 IIA WKINS ELECTRICITY Ques. How many floating coils are used and why? Ans. Two floating coil? are included in each regulator… … Fig. 2,435.—Dial of Westinghouse dial type variable ratio voltage regulator. The dialconsists of a marble slab, upon which the contacts are mounted in a circle as shown.The contact arm is arranged to move from contact to contact. The alternate small con-tacts are dummies, serving to prevent the…
Electrical engineering
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