Question

The transfer function \(\frac{{1 + 0.5s}}{{1 + s}}\) represent a
1. Lag network
2. Lead network
3. Lag-Lead network
4. Proportional controller

Answer 1

Correct Answer - Option 1 : Lag network

The transfer function in the form \(\frac{{1 + aTs}}{{1 + Ts}}\)

For lead network, a > 1

For lag network, a < 1

Here \(aT = 0.5,\;T = 1\)

\( \Rightarrow a = 0.5\)

Hence it represents lag network.