Preview Questions Control Systems Engineer | Role Specific Skill

Question 1: In a chemical plant where the control loop involves a valve with large dead time, how should the PID controller be adjusted?

Which action should you take?

Choose only one option

Use a Smith Predictor to compensate for the dead time in the control loop

Increase the proportional and derivative gains to overcome the delay

Focus on manual control and ignore the PID adjustments

Reduce integral gain and increase derivative gain to improve the response time

Question 2: In developing control algorithms for a chemical plant, how do you handle sensor noise and inaccuracies in the feedback loop?

Which action should you take?

Choose only one option

Increase the gain to compensate for noise in the feedback loop

Ignore sensor noise and rely on manual adjustments

Use only proportional control to minimize the effect of noise

Implement filtering algorithms, such as Kalman filters, to smooth out noisy sensor data before feeding it into the control system

Question 3: What is the role of SCADA system alarms and notifications in ensuring the safety of a chemical plant?

Which action should you take?

Choose only one option

They have no role in safety

They alert operators about deviations from normal operation, enabling timely interventions

They alert operators about personnel schedules

They are used only for financial reporting

Question 4: When designing a PID control algorithm for a chemical process, what is the primary challenge associated with tuning the integral action?

Which action should you take?

Choose only one option

Ignoring the integral action and relying only on proportional control

Ignoring the effects of tuning and leaving the parameters static

Reducing the integral time to speed up system response at the cost of accuracy

Ensuring that the integral time is balanced to avoid excessive overshoot and slow response

Question 5: In process automation, what is the purpose of an inverter in a variable frequency drive (VFD) system?

Which action should you take?

Choose only one option

To protect motors from damage by regulating voltage levels

To provide a constant speed to motors, regardless of process changes

To adjust the speed of electric motors based on process demand, improving energy efficiency

To reduce the wear and tear on motors by controlling motor current

Question 6: In control system design, what is the main function of the feedback loop in process control?

Which action should you take?

Choose only one option

To manually override automatic control for operator intervention

To detect process faults and shut down the system automatically

To continuously monitor and adjust the system to maintain desired setpoints

To store data for later analysis and report generation