VAN NOSTEANiy S ENGINEERING MAGAZINE. 490 THE OPTICAL DYNAMOMETER. Translated from "l'Electricien." the shaft has been measured by a spiral In testing dynamo-electric machines it spring. is a matter of considerable importance to The dynamometer of M. Satchinoff determine the amount of work absorbed… … Fig.l ble of affecting to an important extent the value of this work. To measure the work with accuracy it is necessary to determine the tangential effort and the velocity at the point of ap- plication. The velocity is easily obtained by measuring the radius and counting Fig.3 furnished with a…
Engineering
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