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The figure shows the Nyquist plot of the open-loop transfer function G(s)H(s) of a system. If G(s)H(s) has one right-hand pole, the closed-loop system is 
  • a)
    Always stable
  • b)
    Unstable with one closed - loop right hand pole
  • c)
    Unstable with two closed - loop right hand poles
  • d)
    Unstable with three closed - loop right hand poles
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The figure shows the Nyquist plot of the open-loop transfer function G...
The stability from the Nyquist plot is given by:
N = P - Z
where N = No. of encirclement of the critical point -1+j0 in an anticlockwise direction
P = No. of open-loop poles
Z = No. of zeroes of the characteristic equation
For a system to be stable, the value of Z = 0.
Calculation:

 
Given, P = 1
From the figure, N =1
N = P - Z
1 = 1 - Z
Z = 0
Hence, the system is stable.
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The figure shows the Nyquist plot of the open-loop transfer function G(s)H(s) of a system. If G(s)H(s) has one right-hand pole, the closed-loop system isa)Always stableb)Unstable with one closed - loop right hand polec)Unstable with two closed - loop right hand polesd)Unstable with three closed - loop right hand polesCorrect answer is option 'A'. Can you explain this answer?
Question Description
The figure shows the Nyquist plot of the open-loop transfer function G(s)H(s) of a system. If G(s)H(s) has one right-hand pole, the closed-loop system isa)Always stableb)Unstable with one closed - loop right hand polec)Unstable with two closed - loop right hand polesd)Unstable with three closed - loop right hand polesCorrect answer is option 'A'. 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 The figure shows the Nyquist plot of the open-loop transfer function G(s)H(s) of a system. If G(s)H(s) has one right-hand pole, the closed-loop system isa)Always stableb)Unstable with one closed - loop right hand polec)Unstable with two closed - loop right hand polesd)Unstable with three closed - loop right hand polesCorrect answer is option 'A'. 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 The figure shows the Nyquist plot of the open-loop transfer function G(s)H(s) of a system. If G(s)H(s) has one right-hand pole, the closed-loop system isa)Always stableb)Unstable with one closed - loop right hand polec)Unstable with two closed - loop right hand polesd)Unstable with three closed - loop right hand polesCorrect answer is option 'A'. Can you explain this answer?.
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