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Automatic Control Systems

Q1: The slope of log-magnitude asymptote changes by - 40 dB/ decade at a frequency ω1. This means that

A a double pole is present

B a pair of complex conjugate poles is present

C either a double pole or a pair of complex conjugate poles is present

D a pole or zero at origin is present

ANS:C - either a double pole or a pair of complex conjugate poles is present

A double pole or pair of complex poles result in - 40 dB/decade slope in log magnitude graph.



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