Speed Control of DC Motors | Part 2

[@DrAfrozAlam]

Download Handwritten lecture notes using the following links: drive.google.com/file/d/19OmJzWsMqsO-Sxob7Cz1ZDECxZPDio5V/view?usp=sharing drive.google.com/file/d/1iknxGrnu4GAYXH7FuB4qoH_s8-oztLeR/view?usp=sharing

[@surendrakverma555]

Very good lecture Sir. Thanks 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@MEBANKURTOMAR]

sir 3:40 - 3:52 k beech jo bola ....usme kiya Armature current constant maan liya h? sir please explain....Kiyoki sir pichli video m apne ye bataya tha ki agar flux change hota h to Armature current bhi change hota h...and current ka effect jyada hota as comparison to flux.

[@MEBANKURTOMAR]

Sir now its clear...maximum torque with corresponding rated armature current decrease with decrease in flux...beacause due decrease in flux Ia increases(in starting) but it not come back to same value (Ia decrease with effect of increase in speed). This time armature current is somewhat more than the previous value [to maintain TL =Te = (Ka)(phi)(Ia) ].

[@priyanshjha4170]

Sir how many more lectures would you be uploading for DC machine

[@Ahmedhassan-uy3ie]

How many number of coil in DC machine

[@MEBANKURTOMAR]

6:40-7:00 jo bola wo clear nhi hua sir....at very low speed....effect flux with becoming reverse of the previous one...in this motor is rotating at a lower speed even with the decrease in flux

[@MEBANKURTOMAR]

Its also clear...if we see the graph which made by sir 5:36 - 5:50, on a constant torque line speed increases with decrease in flux (before intersecting point), but speed decreases with decrease in flux..