A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if
A. Kc is reduced
B. Kc is increased
C. Integral control action is introduced
D. Derivative control action is introduced
Answer: Option B
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Option A should be correct. Because we have seen that in proportional controller the increase in KC the offset will be decrease. But we can not eleminate the offset by increasing large value of kc because system will be unstable at large value of kc.
Option A is correct