Some aspects of inductance when iron is present

It is the purpose of this paper to examine various definitions of inductance based on the application in which the term is used. Comparisons are made between the definitions as a function of magnetomotive force and flux density for the special case of dynamo-grade (2.75 per cent) silicon steel. The effects of hysteresis and eddy currents are discussed. Consideration is confined to iron magnetic circuits in which no air gap exists, so that practical applications of conclusions drawn are limited somewhat.