How many roots with positive real parts do the equation s3+s2-s+1=0 h – McqOptions

MCQOPTIONS

1.	How many roots with positive real parts do the equation s3+s2-s+1=0 have?
A.	0
B.	1
C.	2
D.	3
Answer» D. 3

Discussion

No Comment Found

Related MCQs

In closed loop control system, what is the sensitivity of the gain of the overall system, M to the variation in G?
Phase margin is always positive for stable feedback system?
How many roots with positive real parts do the equation s3+s2-s+1=0 have?
For what values of K does the polynomial s4+8s3+24s2+32s+K=0 have roots with zero real parts?
Which of the following may result in instability problem?
The characteristic equation of a control system is given by s5+s4+2s3+2s2+4s+6=0. The number of the roots of the equation which lie on the right half of s-plane:
The characteristic equation of a system is 2s5+s4+4s3+2s2+2s+1=0 . Which one of the following is correct?
The characteristic equation of the control system is s5+15s4+85s3+225s2+274s+120=0 . What are the number of roots of the equation which lie to the left of the line s+1 = 0?
The open loop control transfer function of a unity feedback system is given by :G(s) =K/(s+2)(s+4)(s^2+6s+25)Which is the value of K which causes sustained oscillations in the closed loop system?
Assertion (A): The closed loop stability can be determined from the poles of an open loop system and the polar plot of the frequency response.Reason (R): Unstable system has right half poles.