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Automatic Control Systems - Engineering

Q1:

The given figure shows a constant current source driving a parallel RC circuit. It is equivalent to

A a lag network

B a lead network

C a lag-lead network

D either (a) or (b)

ANS:A - a lag network

Simply convert it to voltage equivalent circuit, the parallel resistor goes in series with capacitor and supply. Output is taken across capacitor which makes it a low pass filter and specifically a lag network.