Pole Pitch, Coil Span, Back Pitch, Front Pitch in Armature Winding | DC Machine | Lap & Wave Winding 

Thank you so much.

Thank you 😊

Nice explain sir 🙏🙏🙏🙏🙏🙏🔥🔥🔥🔥🔥⚡⚡🔥🙏🙏🙏🙏

Thanks for your appreciation. Its a motivating force for me. Keep watching the channel for videos of DC machines and other topics of electrical machines. There are some videos of basics of DC generator, and more coming soon.

I am happy that it helps you. But keep that in mind, it is the student (yourself) who has the ability to understand, and so not just the teacher is to be given the credit. Don't be scared. You will understand all that is to be learned. All the best.

@@jimitkshukla sure sir, thank you. Sir can u explain me what's parallel path while deriving emf EQ... I'm getting confused between no of parallel path and no of conductor...r both same? Or, parallel path is slot?

@@jimitkshukla sir are you in Telegram? So that if I stuck anywhere I can ask doubt there if u don't mind then...

Yes.

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Glad it helped.

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Thank you dear 😇. "Professor" 😎

Thanks a lot

That is a mistake. Z/slots is wrong. It would be slots/p. I have mistakenly interchanged slots with poles in the last equation. Correction is as below: Z = no. of conductors = no. of slots in single layer winding. No. of poles = P No. of pole pairs = P/2 = p Pole pitch = Z/p = Slots/p Thanks for your question, as it identified the mistake. I would add this correction in video description so that future viewers/students are not confused.

Thanks a ton

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Thanks 😊

The placement is to demonstrate and for better understanding of concepts. I did not realize (as my focus was on explaining) that I placed it in such a way that back pitch happened to be 4, an even number, which is contradicting the concept which I was explaining. Please pardon me as it created confusion in understanding. I appreciate your observation. Your comment made me realize that I must also keep these small details in mind while demonstrating concepts. I will take care in future. Pole pitch calculation: North pole at slot 1, and next south pole at slot 8, then pole pitch is 8 - 1 = 7. (Understand by example: distance between 1 cm mark and 8 cm mark on a scale (ruler) would be 8 - 1 = 7 cm). This pole pitch is in terms of number of slots. Other methods: Pole pitch (in terms of slots) = total no. of slots / no. of poles Pole pitch(in mechanical degrees) = angular distance between 2 adjacent poles = 360/P or 2𝛑/P Pole pitch (in meter or inch) can also be calculated as arc length between 2 adjacent poles on stator inner circle with diameter D So Pole pitch (in meter or inch) = circumference / no. of poles = 𝛑D/P

Thank you!