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Q#1 Chopper GATE EE 2006 MCQ +2 marks -0.66 marks

A voltage commutated chopper operating at 1 kHz is used to control the speed of dc motor as shown in figure.  The load current is assumed to be constant at 10 A.

The minimum time in µsec for which the SCR M should be ON is 

280

140

70

0

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