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 132
other when any difference of AMMETERS, VOLTMETERS, AND WATTMETERS 551 electric pressure exists between them. If one be delicately sus-pended so as to be free to move, it will approach the other. Oues. Describe the Kelvin electrostatic voltmeter. Ans. A simple form consists, as shown in fig. 639, of… … Fic. 639.—Kelvin electrostatic voltmeter; a form of instrument designed for measuring highpressures up to 200,000 volts. The instrument, as illustrated, consists of fixed and movablevanes with terminals connecting with each. These vanes which act as condensers takecharges proportional to the…
Electrical engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-270-143.webp)
