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The parameter which is constant along the constant N circle :
  • a)
    Frequency
  • b)
    Phase angle
  • c)
    Magnitude
  • d)
    Open loop gain
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The parameter which is constant along the constant N circle :a)Frequen...
Answer: b
Explanation: Phase angle remains constant in constant N-circle.
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The parameter which is constant along the constant N circle :a)Frequen...


Phase Angle is Constant Along the Constant N Circle

Phase angle is the parameter which remains constant along the constant N circle. Here's why:


  • Definition of a Constant N Circle: A constant N circle is a locus of points in the Nyquist plot where the value of N, the number of clockwise encirclements of the -1 point, remains constant.


  • Relationship between Phase Angle and Nyquist Plot: In a Nyquist plot, the phase angle represents the angle of the complex transfer function at a particular frequency.


  • Implication of Constant N Circle: Along the constant N circle, the phase angle at different frequencies remains the same. This means that as the Nyquist plot moves along the constant N circle, the phase angle does not change.


  • Significance of Phase Angle: The phase angle is crucial in determining the stability and performance of a system. A constant phase angle along the constant N circle indicates a specific relationship between the gain and phase margins of the system.



Therefore, phase angle is the parameter that remains constant along the constant N circle in a Nyquist plot, making it a critical factor in analyzing the stability and behavior of the system.
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The parameter which is constant along the constant N circle :a)Frequencyb)Phase anglec)Magnituded)Open loop gainCorrect answer is option 'B'. Can you explain this answer?
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