Impedance characteristics of an AC MHD generator

A study is made of those parameters, associated with the impedance of an ac MHD generator, which affect the power factor. It has been found that the addition of a ferromagnetic material in the region external to the plasma causes a significant increase in the power factor. An expression for the actual electrical power extracted from the generator, as determined by electrical impedance methods, is shown to be identical to the expression derived by considering Lorentz forces on elements of the fluid for a particular approximation mentioned in the report.