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Routh test
Options:
A .  criterion provides information about the actual location of roots.
B .  cannot be used to test the stability of a control system containing transportation lag.
C .  criterion is not applicable to systems with polynomial characteristic equation.
D .  can not determine as to how many roots of the characteristics equation have positive real roots.
Answer: Option B
Answer: (b).cannot be used to test the stability of a control system containing transportation lag.
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