Which of the following is NOT the advantage of Routh-Hurwitz criterion of control system?
A. By this method, we can also determine the point of intersection for root locus with an imaginary axis
B. By this method, we can determine the range of K for stability
C. We can easily determine the relative stability of the system
D. The criterion is applicable for both linear and non-linear system
Answer: Option D
In root locus analysis the breakaway and break in points
A. lie on the real axis
B. Either lie on the real axis or occur in complex conjugate pairs
C. Always occur in complex conjugate pairs
D. None of the above
Which of the following features is not associated with Nichols chart?
A. (0 dB, -180°) point on Nichols chart represent critical Point (-1, 0)
B. It is symmetric about -180°
C. M loci are centred about (0 dB, -180°) point
D. The frequency at intersection of G (j$$\omega $$) locus and M = +3 dB locus gives bandwidth of closed loop system

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