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GENERAL PRINCIPLES OF MAGNETISM
Magnetic Flux 2 Magnetomotive Force s 3 Con
THE ELECTROMAGNETIC UNITS
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absolute units active conductors air gap alternating currents ampere turns armature bars armature conductors armature core armature current arrow back electromotive force brushes calculated centre connected copper curve cut the flux drum armature ductor dynamo dynamos and alternators dynes electric current electromagnetic electromotive force induced equation exciting current external circuit field magnets flux F flux passes galvanometer Hence horse power hysteresis increase induced electromotive force induction inductor leakage flux length loop machine mag ring magnet limbs magnet poles magnetic circuit magnetic field magnetic flux magnetomotive force mags per square motive force motor moved North pole number of turns opposite direction pendulum permeability pole corners pole face pole horns pole pieces position power wasted produces proportional reduced resistance reversal right angles rotary force rotary magnetic field rotation round sectional area solenoid South pole speed square centimetre square inch supposed surface tractive force unit pole volts watts wire wrought iron zero