Root locus on Control Systems related Questions and Answers

Question :   " What is the number of the root locus segments which do not terminate on zeroes?" 1. " The number of poles" 2. " The number of zeroes" 3. " The difference between the number of poles and zeroes" 4. " The sum of the number of poles and the number of the zeroes" Answer :   3 - " The difference between the number of poles and zeroes"