A It is important to use Maxwell’s equations for calculating fluxes in practical machinery design, since the concept of magnetic circuits has many limitations.
B The limitations of machinery design are related with the use of Maxwell’s equations, instead of the concept of magnetic circuits.
C The concept of magnetic circuits produces satisfatory results, and the use of Maxwell’s equations could be avoided.
D Machinery design has numerous inherent limitations when developed with the use of magnetic circuits. Therefore, Maxwell’s equations could be avoided in order to produce significant results.
E It is necessary to use the concept of magnetic circuits, in order to obtain exact results when calculating fluxes in practical machinery desing. The use of Maxwell’s equations must be limited to actual machinery design.