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 282
l the desired lagging effect is had. Fre-quency adjustment. 133 cycle meters are first calibrated on GO cycles and the leadsthen untwisted to make them correct on 133 cycles. To change such a meter for use onCO cycles it is necessary only to retwist these leads to the point shown by the conditionof… … Fig. 2,529.—Pointer and movable system of Weston wattmeter. The coll is describedin fig. 2,527. The pointer consists of a triangular truss with tubular members, an indextip of very thin metal being mounted at its extremity. The index tip is reinforcedby a rib stamped into the metal. The pointer is…
Electrical engineering
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