The characteristic of 'offset' is inherent...

Question 1 of 270705eccefa5bacbc34ba4d4880e

The characteristic of 'offset' is inherent with which mode of control? proportional control reset control

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Question 1 of 27070

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The characteristic of 'offset' is inherent with which mode of control? proportional control reset control

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🔍 Key Concepts

• Proportional control (P-control) and how output changes with steady error • Reset (integral) control and its effect on long-term or steady-state error • Meaning of offset in process control (difference between setpoint and actual value at steady conditions)

💭 Think About

• For each mode, ask: if there is a constant small error between setpoint and actual value, will this controller mode keep a permanent error or gradually remove it? • Think about what happens to the controller output when the error stays the same for a long time under proportional control versus under reset (integral) action. • Which control mode is specifically added to eliminate or correct a steady-state offset in a proportional system?

✅ Before You Answer

• Be clear on the definition of offset: a steady, permanent difference between setpoint and controlled variable under stable conditions. • Decide which mode(s) can leave a non‑zero steady error when the process is otherwise stable. • Verify which mode is also called integral (I) or PI when combined with proportional and is known for eliminating steady-state offset.