A step-down chopper, fed from a 120 volt DC source, operates a DC motor whose armature e.m.f. and armature resistance are 100 volt and 0.5 Ω respectively. With the magnitude control ratio 0.6, the quadrant of operation DC motor is
A. First
B. Second
C. Third
D. Fourth
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Power Electronics
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