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Exam Questions Papers - Engineering

Q1:

For the system with given characteristic equation
s5 + 4s4 + 8s3 + 8s2 + 7s + 4 = 0
The number of roots on left hand side, right hand side and imaginary axis are respectively.

A 3, 2, 0

B 4, 0, 1

C 3, 0, 2

D 4, 1, 0

ANS:D - 4, 1, 0

Apply Routh Hurwitz criteria.