36. The characteristic equation of a unity feedback system is given by s3 + s2+ 2s + 2 = 0
(a) The system has one pole in the RH of the s-plane
(b) The system has two poles in the RH of the s-plane
(c) The system is asymptotically stable
(d) The system exhibits oscillatory response
37. Marginally stable system have some roots with real parts equal to zero, then the system is :
(a) positive real parts
(b) negative real parts
(c) zero real parts
(d) none of these
38. Integrators are :
(a) stable
(b) unstable
(c) marginally stable
(d) conditionally stable
39. The root locus always terminates on the :
(a) open-loop poles
(b) open-loop zeros
(c) closed-loop poles
(d) closed-loop zeros
40. The root locus is :
(a) an algebraic method
(b) a graphical method
(c) combination of both
(d) none of these
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