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Q#1 Chopper GATE EE 2000 MCQ +2 marks -0.66 marks

A step down chopper operates from a dc voltage source  and feeds a dc motor armature with a back emf . From oscilloscope traces, it is found that the current increases for time, falls to zero over time, and remains zero for time, in every chopping cycle. Then the average dc voltage across the freewheeling diode is:

     

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