A chopper operating at afixed frequency is feeding anR-L load. As - the duty ratio ofthe chopper is increased from25°h to 75°h - the ripple in theload currentF(s) is a constant - then thefilter is a

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A chopper operating at afixed frequency is feeding anR-L load. As - the duty ratio ofthe chopper is increased from25°h to 75°h - the ripple in theload currentF(s) is a constant - then thefilter is a