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what is the MNA in case of d.c. machin?
whaty is the importance of it?
hoe it affect the brush position?
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Answer Posted / santosh!
well MNA stands for MAGNETIC NEUTRAL AXIS! and it is very
important as it is the axis for housing brushes where the
arise of sparks is zero! due to armature reaction brushes
tends to move in the direction of rotation, to avoid this
compensation techniques are used!
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