The Elements of Electrical Engineering a First Years Course for Students
The book The Elements of Electrical Engineering a First Years Course for Students was written by author Tyson Sewell Here you can read free online of The Elements of Electrical Engineering a First Years Course for Students book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Elements of Electrical Engineering a First Years Course for Students a good or bad book?
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193. get this, an e. M. F. Is produced. But the e. M f. So produced is by Lenz's law opposing that which produces it, and therefore acts in a direction directly opposing the flow of the current. The current T^ /> is therefore equal to - . The left hand rule mentioned in Is. the last chapter can be applied to find the direction of rotation with any given direction of current and field. Now we have seen that the power put into the dynamo by the steam engine is principally expended in overcoming t...he tendency for the conductors to go round in the opposite direction. The force with which they are urged, depending on the strength of the DIRECT CURRENT MOTORS. 305 field, the strength of the current, and the total length of the con- ductor in the field carrying the current. This is the same whether the machine be run as a dynamo or as a motor, except that the loss in frictions, heat ( = C S R), hysteresis, and eddy currents, in the case of the dynamo, have to be made up by extra power from the steam engine, while in the case of the motor, by extra electrical power supplied.
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