Preview Questions Control Systems Engineer | Role Specific Skill

Question 1: What strategies do you use to minimize downtime and improve availability of SCADA systems in a petrochemical plant?

Which action should you take?

Choose only one option

Only focus on the software and ignore hardware considerations

Ignore the need for redundancy and rely solely on hardware

Implement redundant hardware and communication links, perform regular maintenance and testing, and ensure backup systems are in place for critical components

Focus only on reducing hardware costs

Question 2: How do you design a control system to handle disturbances in a petrochemical reactor, such as changes in feed composition or temperature?

Which action should you take?

Choose only one option

Use only manual control to address disturbances

Ignore disturbances and design the system for steady-state operation only

Design a system that only reacts after the disturbance is detected

Implement feedback and feedforward control strategies, ensuring the system can quickly compensate for disturbances and return to setpoint

Question 3: What is the primary function of a PID controller in a chemical process control system?

Which action should you take?

Choose only one option

To monitor financial aspects of chemical operations

To measure the temperature of a specific process

To provide continuous control of a process variable by adjusting an output

To optimize the layout of the plant

Question 4: What is the best practice for tuning controllers in a control system design for a chemical process with varying process dynamics?

Which action should you take?

Choose only one option

Implement auto-tuning or gain scheduling methods to dynamically adjust controller parameters based on changing process conditions

Use fixed tuning parameters for all conditions

Tune controllers once and leave them unchanged

Only adjust controllers during process upsets

Question 5: What is the primary purpose of a supervisory control layer in a chemical plant's process automation system?

Which action should you take?

Choose only one option

To replace all automated systems and make process adjustments manually

To oversee and adjust process control systems to ensure optimal performance across the plant

To monitor data but not interact with control systems

To directly control machinery and override automated processes

Question 6: In a chemical process, what is the consequence of using only proportional (P) control without any integral (I) or derivative (D) action?

Which action should you take?

Choose only one option

It allows for immediate control of the setpoint without delay

It eliminates any oscillations and provides precise control

It leads to steady-state error, as the system cannot correct for persistent offsets

It minimizes overshoot and improves response time