First column elements of the Routh’s tabulation are 3, 5, -3/4, ½, 2. It means that there are:
Assertion (A): Feedback control system offer more accurate control over open-loop systems.
Reason (R): The feedback path establishes a link for input and output comparison and subsequent error correction.
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The Routh-Hurwitz criterion cannot be applied when the characteristic equation of the system contains any coefficients which is :
The following characteristic equation results in stable operation of the feedback system s3+4s2+10s+11=0
Consider the following statements:
Routh-Hurwitz criterion gives:
1. Absolute stability
2. The number of roots lying on the right half of the s-plane
3. The gain margin and the phase margin
Which of the following techniques is utilized to determine at the actual point at which the root locus crosses the imaginary axis?
The characteristic equation of a control system is given by s6+2s5+8s4+12s3+20s2+16s+16=0 . The number of the roots of the equation which lie on the imaginary axis of s-plane:
Assertion (A): A linear, negative feedback control system is invariable stable if its open loop configuration is stable
Reason (R): the negative feedback reduces the overall gain of the feedback.