Exam Question
With regards to process control system. Explain the following.
(a) Proportional control (4)
(b) Integral control (4)
(c) Derivative control (4)
(d) The necessity of derivative control (4)
Class 2 (2nd Engineer)
MEKG
📅 Mar 2024
Reference Answer
### (a) Proportional Control (P)
**Concept:**
Proportional control is a type of linear feedback control where the corrective action or output from the controller is directly and linearly proportional to the error signal. The error is the difference between the Set Point (SP) and the Process Variable (PV).
**Principle of Operation:**
**Concept:**
Proportional control is a type of linear feedback control where the corrective action or output from the controller is directly and linearly proportional to the error signal. The error is the difference between the Set Point (SP) and the Process Variable (PV).
**Principle of Operation:**
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