“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

Chemical Engineering Mcqs

“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

(A)  Bode stability

(B)  Nyquist

(C)  Routh stability

(D)  None of these



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