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Which of the following figure(s) represent valid root loci in the s-plane for positive K? Assume that the system has a transfer function with real coefficients—
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- Fig:- A
- Fig:- B
- Fig:- C
- Fig:- D
- Fig:- A
Correct Option: A
Only (A) is valid root loci since in option (B), (C) and (D), the root loci lies to the left half of s-plane having an even number of zeros and poles, not odd. Hence alternative (A) is the correct choice.
