Turns

An expre ion applied to the convolutions of wire in a solenoid, electro-magnet, or other apparatus or construction of that kind. A turn indicates a complete encircling of the core or axis of the object. Thus a wire wound five times around a bar gives five turns. While this is its primary meaning the term if compounded may refer to virtual turns. Thus an ampere-turn means one ampere pa ing through one turn. But ten ampere-turns may mean ten amperes pa ing through ten turns, five amperes pa ing through two turns, and so on. This use is analogous to a dimension of length in a compound word, as foot-pound. [Transcriber's note: "But ten ampere-turns may mean ten amperes pa ing through ONE turn or one ampere through ten turns, and so on."] There may be a number of kinds of turns qualified by descriptive adjectives, as series-turns, the turns of wire in a series circuit of a compound dynamo. In the same way there are shunt-turns. If series ampere-turns or shunt ampere-turns are meant the word ampere should be included. 551   STANDARD ELECTRICAL DICTIONARY.