PG1995
Active Member
Hi,
I was watching the video below at the bottom on dc machine and wanted to clarify some points.
Question 1:
The following question is about the video segment from 8:21 to 9:20.
To get the waveform ABCD, the commutator segments should be arranged in such a way that from A to B, the brushes make contact with one coil and from B to C, the brushes make contact with the other coil and so on. Do I have it right?
Question 2:
It shows only one coil with four magnet poles. Suppose the coil rotating clockwise. I don't think that any voltage (or, current?) should be produced because both sides of the coil are cutting the same strength and similarly oriented magnetic field lines in the same direction. Do I have it right?
Question 3:
This question is actually a continuation of Question 2. If E and G makes a coil, and F and H makes another coil, this wouldn't generate any current. Yes, it would work if, say, E and F make one coil, and G and H another coil. Do you agree?
Thank you for the help.
I was watching the video below at the bottom on dc machine and wanted to clarify some points.
Question 1:
The following question is about the video segment from 8:21 to 9:20.
To get the waveform ABCD, the commutator segments should be arranged in such a way that from A to B, the brushes make contact with one coil and from B to C, the brushes make contact with the other coil and so on. Do I have it right?
Question 2:
It shows only one coil with four magnet poles. Suppose the coil rotating clockwise. I don't think that any voltage (or, current?) should be produced because both sides of the coil are cutting the same strength and similarly oriented magnetic field lines in the same direction. Do I have it right?
Question 3:
This question is actually a continuation of Question 2. If E and G makes a coil, and F and H makes another coil, this wouldn't generate any current. Yes, it would work if, say, E and F make one coil, and G and H another coil. Do you agree?
Thank you for the help.
Last edited:
