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Automatic Control Systems - Engineering

Q1:

First column elements of Routh's tabulation are 3, 5, , 2. It means that there

A is one root in left half s plane

B are two roots in left half s plane

C are two roots in right half s plane

D is one root in right half s plane

ANS:C - are two roots in right half s plane

Since there are two sign changes in the first column, hence two roots in right half plane.