Q145
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
AnswerB.
Second
C.
Third
D.
Fourth
Answer: Option A
Solution
Answer: Option A
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