Automatic Control Systems - Engineering

Q1:

For the system in the given figure G varies slightly, the ratio of open loop sensitivity to closed loop sensitivity is

A 1 : (1 + GH)

B 1 : (1 + GH)-1

C 1 : (1 - GH)

D 1 : (1 - GH)-1

ANS:B - 1 : (1 + GH)-1

No answer description is available.