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If the magnetic circuit of the dc machine is in the saturation region, the armature reaction
- a)does not affect flux/pole
- b)increases the flux/pole
- c)decreases flux/pole
- d)affects the flux/pole only when armature current is small
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
If the magnetic circuit of the dc machine is in the saturation region,...
In the saturation region the flux will be constant.
Most Upvoted Answer
If the magnetic circuit of the dc machine is in the saturation region,...
Explanation:
When the magnetic circuit of the DC machine is in the saturation region, it means that the magnetic field strength has reached its maximum limit and cannot increase any further. In this situation, the armature reaction does not affect the flux per pole because the magnetic field strength is already at its maximum value.
The armature reaction refers to the interaction between the armature current and the main magnetic field. It creates a magnetic field that opposes or reinforces the main magnetic field. However, in the saturation region, the main magnetic field is already at its maximum, so the armature reaction cannot further increase or decrease the flux per pole.
Therefore, the correct answer is option 'A' - the armature reaction does not affect the flux per pole when the magnetic circuit of the DC machine is in the saturation region.
When the magnetic circuit of the DC machine is in the saturation region, it means that the magnetic field strength has reached its maximum limit and cannot increase any further. In this situation, the armature reaction does not affect the flux per pole because the magnetic field strength is already at its maximum value.
The armature reaction refers to the interaction between the armature current and the main magnetic field. It creates a magnetic field that opposes or reinforces the main magnetic field. However, in the saturation region, the main magnetic field is already at its maximum, so the armature reaction cannot further increase or decrease the flux per pole.
Therefore, the correct answer is option 'A' - the armature reaction does not affect the flux per pole when the magnetic circuit of the DC machine is in the saturation region.
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