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All the constant N-circles in G planes cross the real axis at the fixed points. Which are these points?
- a)-1 and origin
- b)Origin and +1
- c)-0.5 and 0.5
- d)-1 and +1
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
All the constant N-circles in G planes cross the real axis at the fixe...
Centre of N circle is (-1/2, 1/2N)
N = tanα
Constant –N circles always pass through (-1, 0) and (0, 0).
N = tanα
Constant –N circles always pass through (-1, 0) and (0, 0).
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All the constant N-circles in G planes cross the real axis at the fixe...
Understanding N-Circles in G-Planes
N-circles are geometric representations in the context of complex analysis and control systems. They are used to analyze stability and frequency response in systems. In G-planes, which typically represent the real and imaginary components of complex numbers, the intersections of N-circles with the real axis are of significant interest.
Fixed Points of N-Circles
The fixed points where N-circles intersect the real axis are crucial in determining system behavior. Let's explore why the correct answer is option 'A' (-1 and the origin).
Key Points:
- N-Circle Definition: An N-circle can be defined as a locus of points in the G-plane that maintains a constant distance from a specific point (the center).
- Location of Intersections: The intersection points on the real axis correspond to specific values where the system's gain is constant.
- Fixed Points:
- The origin (0) represents a neutral stability point, where there is neither gain nor loss.
- The point -1 is significant because it often indicates a point of instability or phase shift in control systems, especially in feedback loops.
Conclusion
The intersections at -1 and the origin signify critical points of interest in system analysis. They help engineers understand the stability and behavior of systems under various conditions, making option 'A' the correct answer.
By identifying these points, engineers can make informed decisions about system design, ensuring desired performance and stability.
N-circles are geometric representations in the context of complex analysis and control systems. They are used to analyze stability and frequency response in systems. In G-planes, which typically represent the real and imaginary components of complex numbers, the intersections of N-circles with the real axis are of significant interest.
Fixed Points of N-Circles
The fixed points where N-circles intersect the real axis are crucial in determining system behavior. Let's explore why the correct answer is option 'A' (-1 and the origin).
Key Points:
- N-Circle Definition: An N-circle can be defined as a locus of points in the G-plane that maintains a constant distance from a specific point (the center).
- Location of Intersections: The intersection points on the real axis correspond to specific values where the system's gain is constant.
- Fixed Points:
- The origin (0) represents a neutral stability point, where there is neither gain nor loss.
- The point -1 is significant because it often indicates a point of instability or phase shift in control systems, especially in feedback loops.
Conclusion
The intersections at -1 and the origin signify critical points of interest in system analysis. They help engineers understand the stability and behavior of systems under various conditions, making option 'A' the correct answer.
By identifying these points, engineers can make informed decisions about system design, ensuring desired performance and stability.
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All the constant N-circles in G planes cross the real axis at the fixed points. Which are these points?a)-1 and originb)Origin and +1c)-0.5 and 0.5d)-1 and +1Correct answer is option 'A'. Can you explain this answer?
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