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The range of K for stability of a feedback system whose...

This question belongs to Electronics And Communications Engineering Control Systems
Control Systems
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The range of K for stability of a feedback system whose open-loop transfer function $$G\left( s \right) = \frac{K}{{s\left( {s + 1} \right)\left( {s + 2} \right)}}$$     is:

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Correct Answer: Option B
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