the inclined axes of auxiliary air slot barriers 634 636 with respect to the axis of primary air slot barrier 630 increases the effectiveness of the barriers to flux flow fig7 illustrates a fifth embodiment of the invention in which two air slots exist within each common pole of the srm stator 702 has a similar configuration to that of stator 402 illustrated by fig4 however primary air slot 430 within stator 402 has a rectangular shape whereas primary air slot 730 within stator 702 does not instead air slot 730 has the shape of a column with a wider base at the foot of the column and a wider crown at the head of the column fig8 illustrates a sixth embodiment of the invention in which an srm stator is composed of multiple isolated sections srm 800 has a stator 802 composed of four isolated stator sections 802 a 802 b 802 c 802 d that have no physical connection to one another through their respective back irons 808 each stator section 802 a 802 b 802 c 802 d has an arcuate shape with a first side part 822 of a common pole 820 at one end of the arc and a second side part 824 of another common pole at the other end of the arc for each stator section 802 a 802 b 802 c 802 d an air.