Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 324
onstant friction condi-tion before start imi tins test, so that as little change as possible will taiteplace in the different constant values. It is necessary to know accu-rately the resistance of the armature, B, in order to determine its I-R lossat different loads, and to use copper brushes to… … UNDER. TEST 312 TESTS OF D/NAMOS AND MOTORS. Friction, core loss, and windage of motor. — The speed havingbeen determined, the belt is removed, and the motor field kept at its finaladjustment, and enough voltage is supplied to the motor armature to driveit free at the standard speed. The watts…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-367-231.webp)