Which one of the following statements is not correct?

Root loci can be used for analyzing stability and transient performance

Root loci provide insight into system stability and performance

Shape of the root locus gives idea of type of controller needed to meet design specification

Root locus can be used to handle more than one variable at a time

The main objective of drawing root locus plot is :

To obtain a clear picture about the open loop poles and zeroes of the system

To obtain a clear picture about the transient response of feedback system for various values of open loop gain K

To determine sufficient condition for the value of ‘K’ that will make the feedback system unstable

The addition of open loop poles pulls the root locus towards:

The right and system becomes unstable

Imaginary axis and system becomes marginally stable

The left and system becomes unstable

The right and system becomes unstable

Consider the following statements regarding root loci:

All root loci start from the respective poles of G(s) H(s)

All root loci end at the respective zeros of G(s) H(s) or go to infinity

The root loci are symmetrical about the imaginary axis of the s-plane

All root loci start and end from the respective poles of G(s) H(s) or go to infinity

Which of the following statements are correct?

Root locus is for the negative feedback systems

Complementary root locus is for the positive feedback systems

Root locus is for the negative feedback and Complementary root locus is for the positive feedback systems

Complementary root locus is for the negative feedback systems

Which one of the following is not the property of root loci?

The root locus is symmetrical about imaginary axis

They start from the open loop poles and terminate at the open loop zeroes

The breakaway points are determined from dK/ds = 0

Segments of the real axis are the part of the root locus if and only is the total number of real poles and zeroes to their right is odd.

What is the number of the root locus segments which do not terminate on zeroes?

The difference between the number of poles and zeroes

The sum of the number of poles and the number of the zeroes

Which one of the following are correct?The root locus is the path of the roots of the characteristic equation traced out in the s-plane?

As the input of the system is changed

As the output of the system is changed

As a system parameter is changed

The addition of open loop zero pulls the root loci towards:

The left and therefore system becomes more stable

The right and therefore system becomes unstable

Imaginary axis and therefore system becomes marginally stable

The left and therefore system becomes unstable

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