What is Coil Pitch and Pole Pitch /what is electrical and mechanical angle in Urdu/Hindi

This video lecture provides full understanding of pole pitch and coil pitch with examples. In this video lecture you will learn about electrical angle,mechanical angle,Relation between electrical and mechanical angle.This video also provides understanding of pole pitch interm of electrical ,mechanical angle and interm of armature conductors and coil pitch interm of electrical angle and interm of armature slots .