Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 165
aft, in inches; /j = Safe working stress ofthe material for shearing, in lbs. per sq. in., which, for cast iron, is5,000, and for cast steel 15,000; ft = Safe working stress of the material for tension or compres-sion, in lbs. per sq. in., which is 1,250 for cast iron, and 5,000 for caststeel; c?„… … Fig. 150. Ring-Core Armature Driven byPulley and End-Rings *See The Dynamo, by Hawkins & Wallis, New York, 1903. p. 310. .^^^y^y/^yMHIXr?^ I t7rb^fi„2 For the section is known as the modulus of resistance of the section d 2 ^ * f i It IS — for the section -d 3 it is and if any one of these…
Electrical engineering
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