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Three-phase motors

theory and operation

I1 — \-lw1I1 per pole . (1) for a two-pole, three-phase machine. Effect of
Concentrated Windings For a three-phase machine with a concentrated winding
in one slot per pole, per phase, and p pairs per phase, the total number of turns
per phase ...

Applied Magnetism

Coulomb's Law The law of the mutual action between magnetic poles was first
stated by Coulomb and may be expressed as follows : // two magnetic poles of
strength m and m' respectively are placed in air and separated by a distance d
cm., ...

Principles of Electrical Engineering

A Comprehensive Work Covering the Principles of Heavy-current and Light-current Engineering Practice: Also Covering the Requirements of the B. Sc. (engineering), A.M.I.E.E., and Higher Examinations in this Subject

These two points are termed the " poles " of the magnet and the strength of each
pole is said to be in units. If two different bar magnets have, respectively, pole
strengths ml and to2, then the force which will act between the poles of the two ...