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The open-loop transfer function of a feedback system is
The system is stable for K
  • a)
    K > 1
  • b)
    K < 1
  • c)
    any value of K
  • d)
    unstable
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The open-loop transfer function of a feedback system isThe system is s...
RHP poles of open-loop system P = 1, Z = P - N .
For closed loop system to be stable, Z = 0, 0 =1 -  N ⇒N = 1
There must be one anticlockwise rotation of point (-1+ j0). It is possible when K > 1.
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The open-loop transfer function of a feedback system isThe system is stable for Ka)K >1b)K <1c)any value of Kd)unstableCorrect answer is option 'A'. Can you explain this answer?
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