Question

Assertion (A): In Proportional Integral (PI) control mode, one mode provides stability and the other mode removes the off-set.
Reason (R): The proportional mode removes the off set (i.e. automatic reset).
In light of the above statements, choose the correct answer from the options given below:

• A. Both (A) and (R) are true and (R) is the correct explanation of (A)
• B. Both (A) and (R) are true and (R) is NOT the correct explanation of (A)
• C. (A) is true but (R) is false
• D. (A) is false but (R) is true

Hint:

PI control:
Proportional: stability.
Integral: removes off-set (automatic reset).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
PI control mode combines two modes.
Each mode has a specific function.

Step 2: Key Formula or Approach:
No specific formula.
Need to understand control modes.

Step 3: Detailed Explanation:
Assertion A: One mode provides stability, other removes off-set - true.
In PI control:
- Proportional mode provides stability.
- Integral mode removes off-set (automatic reset).
Reason R: Proportional mode removes off-set - false.
It is the integral mode that removes off-set.
Thus, A is true but R is false.

Step 4: Final Answer:
(A) is true but (R) is false.
Hence, the correct option is (C).