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A feedback control system with high gain k, is shown in the figure below:
 
Then the closed loop transfer function is
  • a)
    Sensitive to perturbations in G(s) and H(s)
  • b)
    Sensitive to perturbations in G(s) but not to perturbations in H(s)
  • c)
    Sensitive to perturbations in H(s) but not to perturbations in G(s)
  • d)
    Insensitive to perturbations in G(s) and H(s)
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A feedback control system with high gain k, is shown in the figure bel...
Transfer function 
Sensitivity of transfer function for the variation in G(s) is
Given that, k is very high
Hence  will be zero at higher values of k.
Sensitivity of the transfer function for the variation in H(s) is
For higher values of K,  will be -1.
Hence, transfer function is sensitive to perturbations in H(s) but not to perturbations in G(s).
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A feedback control system with high gain k, is shown in the figure below:Then the closed loop transfer function isa)Sensitive to perturbations in G(s) and H(s)b)Sensitive to perturbations in G(s) but not to perturbations in H(s)c)Sensitive to perturbations in H(s) but not to perturbations in G(s)d)Insensitive to perturbations in G(s) and H(s)Correct answer is option 'C'. Can you explain this answer?
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A feedback control system with high gain k, is shown in the figure below:Then the closed loop transfer function isa)Sensitive to perturbations in G(s) and H(s)b)Sensitive to perturbations in G(s) but not to perturbations in H(s)c)Sensitive to perturbations in H(s) but not to perturbations in G(s)d)Insensitive to perturbations in G(s) and H(s)Correct answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A feedback control system with high gain k, is shown in the figure below:Then the closed loop transfer function isa)Sensitive to perturbations in G(s) and H(s)b)Sensitive to perturbations in G(s) but not to perturbations in H(s)c)Sensitive to perturbations in H(s) but not to perturbations in G(s)d)Insensitive to perturbations in G(s) and H(s)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A feedback control system with high gain k, is shown in the figure below:Then the closed loop transfer function isa)Sensitive to perturbations in G(s) and H(s)b)Sensitive to perturbations in G(s) but not to perturbations in H(s)c)Sensitive to perturbations in H(s) but not to perturbations in G(s)d)Insensitive to perturbations in G(s) and H(s)Correct answer is option 'C'. Can you explain this answer?.
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