This lesson covers the concept of armature reaction in detail. It explains how to determine the armature MMS distribution along the air gap. The lesson also discusses the polarity of currents between the brushes. For instance, if you consider a side of the armature, the currents between the brushes have the same polarity. This knowledge is crucial for understanding the functioning of electrical machines.
01:11 - Explanation of the peak value of the armature MMS
08:27 - Discussion on the flux distribution in the DC machine
14:50 - Discussion on the effect of armature current on the resultant field
24:56 - Discussion on the calculation of the armature MMS per pole