Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 562
si-tion of right angles the armature will assume. It isnot practical to use this construction of an instrumentto cover a range of more than one-half of a right ELECTRICITY FOR ENGINEERS 143 angle, for when the needle moves through an angle ofabout 50 degrees, it will require a much greaterincrease… … FIGURE 82. current in a wire and is sometimes quite-convenient onarc circuits which are liable to have their currentsreversed either by wrong plugging of the board or thereversing of polarity in the dynamo. Voltmeters and ammeters used with alternating cur-rents must, of course, differ in some…
