Discussion :: Automatic Control Systems
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The slope of log-magnitude asymptote changes by - 40 dB/ decade at a frequency ω1. This means that
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A.
a double pole is present
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B.
a pair of complex conjugate poles is present
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C.
either a double pole or a pair of complex conjugate poles is present
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D.
a pole or zero at origin is present
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Answer : Option C
Explanation :
A double pole or pair of complex poles result in - 40 dB/decade slope in log magnitude graph.
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