Q.

The main objective of drawing root locus plot is :

A. to obtain a clear picture about the open loop poles and zeroes of the system
B. to obtain a clear picture about the transient response of feedback system for various values of open loop gain k
C. to determine sufficient condition for the value of ‘k’ that will make the feedback system unstable
D. both b and c
Answer» D. both b and c
Explanation: the main objective of drawing root locus plot is to obtain a clear picture about the transient response of feedback system for various values of open loop gain k and to determine sufficient condition for the value of ‘k’ that will make the feedback system unstable.
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