The cross-section of a 2-pole dc machine with pertinent dimensions in mil- limeters is given in…

The cross-section of a 2-pole dc machine with pertinent dimensions in mil- limeters is given in Figure 1. Analyze the magnetic circuit and deter- mine the required mmf per pole to set up a flux of 5.46 mWb in the air- gap. The active length (stack length) of the machine is 150 mm. Using the equiva- lent reluctance circuit, verify the mmf requirements per pole.