Chemical Engineering - Process Control and Instrumentation - Discussion

Discussion Forum : Process Control and Instrumentation - Section 1 (Q.No. 40)
40.
A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if
Kc is reduced.
Kc is increased.
integral control action is introduced.
derivative control action is introduced.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
10 comments Page 1 of 1.

Devesh said:   6 years ago
If we increases gain of proportion controller its offset will decreases but proportional band is also decreases.

Ravi said:   1 decade ago
Answer is wrong. It will decrease and yes the oscillatory nature will increase.

Anshumaan Srivastava said:   10 years ago
As Kc increases offset decreases check Donald R. Coughanowr 230 3rd edition.

Prasanna said:   1 decade ago
Why? introduce integral control it also eliminates the offset.

Nandini said:   1 decade ago
If kc is increased the offset will decrease. Answer is wrong.
(1)

Saurabh said:   10 years ago
Yes answer is wrong as Kc increase offset will decrease.

Prani said:   6 years ago
As Kc increases offset decreases.

Bimal said:   8 years ago
The correct option is A.

Shaima said:   7 years ago
The correct option is A.

Zeeshan Ulhaq said:   5 years ago
Kc is constant.

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