Question: What is the formula of the magnetic to electrical boarding ratio?
Options
A : magnetic to electrical boarding ratio = number of poles * permeance coefficient * flux per pole/number of conductors * armature current
B : magnetic to electrical boarding ratio = number of poles / permeance coefficient * flux per pole*number of conductors * armature current
C : magnetic to electrical boarding ratio = number of poles + permeance coefficient * flux per pole/number of conductors * armature current
D : magnetic to electrical boarding ratio = number of poles * permeance coefficient / flux per pole*number of conductors * armature current
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