AE-JE Foundation EE : Control System Quiz - 5

Consider a feedback control system:

The root locus of the system has which of the following characteristics?

For a constant gain k, the log magnitude curve in Bode plot is

The polar plot of open loop transfer function is shown

Find the phase margin of the system

Consider a unity negative feedback system with feedforward gain G(s) = . The root-loci of the system cross the imaginary axis at:

The gain margin of a unity negative feedback system having forward transfer function  is,

The root locus of the feedback control system having the characteristic equation s² + 6K_s + 2_s + 5 = 0 where K > 0, enter into real axis at.

Bode magnitude plot is drawn between

Find the number of poles in the left half plane (LHP), the right half plane (RHP) and on the jw-axis for the feedback control system as shown. Is the system stable?

Which of the following transfer function has the given polar plot?