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 268
ept in tension by thespring E. Hot wire instruments are equally accurate with alternating or directcurrent, but have cramped scales (since the deflection is proportional tothe square of the current), and are liable to creep owing to unequalexpansion of the parts. There is also the danger that they… … Fig. 2.504.—Diagram illustrating the principle of hot wire instruments. The essential partsare the active wire A, stretched between terminals T and T, tension wire C, thread E, andpulley D to which is attached the pointer. Induction Instruments.—These were invented by Fer-raris, and are sometimes…
Electrical engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
