Preview Questions Control Systems Engineer | Role Specific Skill

Question 1: What is the primary disadvantage of a poorly tuned PID controller in a dynamic chemical process?

Which action should you take?

Choose only one option

It automatically adjusts the process setpoint to optimize performance

It improves the overall process efficiency and reduces energy consumption

It ensures fast and accurate control with minimal operator intervention

It can result in instability, excessive oscillations, and a slow response time

Question 2: In a chemical plant, how do you ensure that control loops for highly dynamic systems, like pumps and compressors, are optimized for stability and response time?

Which action should you take?

Choose only one option

By tuning PID controllers with proper attention to time delays and system dynamics

By reducing the number of control loops

By only using manual overrides during disturbances

By using a proportional-only controller

Question 3: How would you tune a PID controller for a chemical reactor system with significant time delays?

Which action should you take?

Choose only one option

Increase the proportional gain to compensate for the delay

Use a low integral gain and adjust the derivative to anticipate the delay

Rely solely on manual control to manage delays

Ignore the delay, as it has no significant effect

Question 4: How does a SCADA system handle real-time process control in a chemical plant?

Which action should you take?

Choose only one option

By manually controlling all devices via the HMI interface

By storing all process data in the historian and sending periodic reports to operators

By analyzing data offline and adjusting controls periodically

By collecting data from sensors, analyzing it, and sending control commands to field devices

Question 5: How do you ensure effective communication between process automation systems and operators in a chemical plant?

Which action should you take?

Choose only one option

Focus solely on automation and ignore operator interaction

Assume operators will learn from experience and ignore HMI designs

Use basic alarm systems without interaction

Implement human-machine interfaces (HMIs), real-time dashboards, and detailed alarm management systems to keep operators informed and provide actionable data for decision-making

Question 6: What would be the effect of setting the integral (I) term too high in a PID controller in a chemical process?

Which action should you take?

Choose only one option

It would make the system more responsive and accurate

It could result in slow response time and overshoot due to excessive correction

It would stabilize the system by reducing oscillations

It would eliminate the steady-state error immediately