Wow varun tats really a gud attempt of making summary.......u r da one among great lecturers who makes ur subscribers the real satisfaction of watching ur videos.
I think the armature reaches high speed because of residual magnetism which does not allow flux to reach zero in the field winding(am I correct?). If I am correct, my other question is what happens if the field winding is disconnected and physically/magnetically isolated from the motor while it is running. Assume the DC shunt motor is not loaded.
In open circuit ,the speed can be avoided by compensating winding or some turns in series to poles.But,these compensating or some turns of winding will be placed in field poles in series to brush in open circuit these will be cut off..so,how this could be a solution to open circuit problem??
in a motor a load will be always connected and it is a mechanical load that will demand some current and because the armature supplies that current the winding that is in series will see that current, the open circuit here is for the field circuit only....
But as the speed increases to high value due to open ckt of field winding, armature voltage also increases then torque should get reduce... When there is no torque , then speed should become 0 after some time... Why it is not happening??
Wow varun tats really a gud attempt of making summary.......u r da one among great lecturers who makes ur subscribers the real satisfaction of watching ur videos.
I think the armature reaches high speed because of residual magnetism which does not allow flux to reach zero in the field winding(am I correct?). If I am correct, my other question is what happens if the field winding is disconnected and physically/magnetically isolated from the motor while it is running. Assume the DC shunt motor is not loaded.
Great job sir
*Let's* find out = Let us find out.
"Lets" means permits, or allows.
In open circuit ,the speed can be avoided by compensating winding or some turns in series to poles.But,these compensating or some turns of winding will be placed in field poles in series to brush in open circuit these will be cut off..so,how this could be a solution to open circuit problem??
in a motor a load will be always connected and it is a mechanical load that will demand some current and because the armature supplies that current the winding that is in series will see that current, the open circuit here is for the field circuit only....
But as the speed increases to high value due to open ckt of field winding, armature voltage also increases then torque should get reduce... When there is no torque , then speed should become 0 after some time... Why it is not happening??