The characteristic equation of a feedback control system is s3+Ks2+9s – McqOptions

MCQOPTIONS

1.	The characteristic equation of a feedback control system is s3+Ks2+9s+18. When the system is marginally stable, the frequency of the sustained oscillation:
A.	1
B.	1.414
C.	1.732
D.	3
Answer» E.

Discussion

No Comment Found

Related MCQs

The characteristic equation of a system is given by3s4+10s3+5s2+2=0. This system is:
The polynomial s4+Ks3+s2+s+1=0 the range of K for stability is _____________
Consider a characteristic equation, s4+3s3+5s2+6s+k+10=0. The condition for stability is
The characteristic equation of a feedback control system is s3+Ks2+9s+18. When the system is marginally stable, the frequency of the sustained oscillation:
Consider a negative feedback system where G(s) =1/(s+1) and H(s) =K/s(s+2). The closed loop system is stable for
Determine the condition for the stability of unity feedback control system whose open loop transfer function is given byG(s) = 2e-st/s(s+2)a) T >1b) T <0c) T <1d) T >0 5.Determine the value of K such that roots of characteristic equation given below lies to the left of the line s = -1. s3+10s2+18s+K.
Determine the stability of closed loop control system whose characteristic equation iss5+s4+2s3+2s2+11s+10=0.
The open loop transfer functions with unity feedback are given below for different systems.Among these systems the unstable system is
A system with unity feedback having open loop transfer function as G(s) = K(s+1)/s3+as2+2s+1. What values of ‘K’ and ’a’ should be chosen so that the system oscillates ?