Applied Magnetism: An Introduction to the Design of Electromagnetic Apparatus |
Contents
THE ELECTROMAGNETIC UNITS | 46 |
MAGNETOMOTIVE FORCE OF CURRENT | 53 |
Quality of Magnetic Flux 42 Rules for Polarity | 106 |
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Common terms and phrases
absolute unit air gap alternating currents ampère turns armature bars armature conductors armature core armature current arrow B₁ back electromotive force back excitation brushes calculated centre connected continuous current copper cubic centimetre curve cylinder ductor dynamo dynes electric current electromagnetic electromotive force induced equation exciting coils exciting current field magnets flux passes frequency galvanometer Hence horse power hysteresis increase induced electromotive force induction inductor leakage flux length loop machine magnet limbs magnet poles magnetic circuit magnetic field magnetic flux magnetomotive force mags per square measured motive force motor North pole number of turns permeability pole corners pole face pole horns pole pieces power wasted primary coil produce proportional reduced resistance reversal right angles rotary force rotary magnetic field round S₁ sample of iron sec² sectional area solenoid South pole speed square centimetre square inch supposed tractive force transformer unit pole volts watts wire zero