If any term in the first column of a Routh array becomes zero, then
A. Routh criterion cannot be used to determine stability
B. Routh criterion can be used by substituting a small positive number for zero and completing the array
C. Routh criterion can be used by substituting a big positive number for zero and completing the array
D. Routh criterion can be used by substituting a small negative number for zero and complet-ing the array
Answer: Option B
This Question Belongs to Electronics And Communications Engineering >> Control Systems
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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