ECE :: Automatic Control Systems
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For quadratic factor
. In Bode log magnitude plot the high frequency asymptote is a straight line having the slope -
Assertion (A): When the phase margin of a control system is improved using a lead network, noise transmission increases.
Reason (R): Phase lead compensation increases bandwidth.
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For a first order system having transfer function
, the unit ramp response is -
If feedback factor is β the overall gain of a closed loop system is approximately equal to
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The functions
and 
have -
A unity feedback system has open loop transfer function
The closed loop transfer function is
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and dQ is analogous to change in amount of liquid and dv is analogous to change in head.
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. Since 1 << Av β, the gain is 
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