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Answer Posted / sunil guru
THE MAGNETIC FIELD FLUX HAS TO COMPETE THE RELUCTANCE AND RELUCTANCE IS DIRECTLY PROPORTIONAL TO THE AIR GAP ....
SO LESSER THE AIR GAP LESS IS THE LOSSES....
AIR GAP SHOULD BE LESS THAN 5 mm IN DC MC. AND LESS THAN 3 mm IN AC MACHINE
IF THE AIR GAP IS MORE THEN TO ESTABLISH THE MMF THE MACHINE WILL TAKE MORE CURRENT AND HENCE MORE IS THE LOSSES ....
FOR ANY DISAGREEMENT MAIL ME AT parmar20072008@yahoo.com
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