Exam Questions Papers - Engineering

Q1:

When transient and steady state response require improvement; a __________ is used.

A Lead compensator

B Lag - Lead compensator

C Lag compensator

D Integrator

ANS:B - Lag - Lead compensator

When improvement in transient state response is required Lead compensator is used. When improvement in steady state response is required lag compensator is used. Use of lag-lead compensator increases the low frequency gain which improves the steady state while at the same time it increases bandwidth of the system making the system response very fast.