Automatic Control Systems

Q1:
For a factor in the transfer function, the log magnitude plot

A is a straight line with slope 0 dB/decade

B is a straight line with slope 20 dB/decade

C is a straight line with slope - 20 dB/decade

D is a straight line with slope - 40 dB/decade

ANS:D - is a straight line with slope - 40 dB/decade

jω term in denominator gives a straight line with a slope of - 20 dB/decade and gives a straight line with a slope of - 40 dB/decade.



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