For a feed back control system to be stable, the _________________?

Process Control and Instrumentation 25/08/2023

A. Roots of the characteristic equation should be real
B. Poles of the closed loop transfer function should lie in the left half of the complex plane
C. Bode plots of the corresponding open loop transfer function should monotonically decrease
D. Poles of the closed loop transfer function should lie in the right half of the complex plane

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