Automation engineer,DCS engineer Interview questions

1.Discuss the purpose and function of the four levels in a typical control system?

2.What are the functions and features of a typical dcs

3.Explain the operation and purpose of the processor in a typical programmable controller system

4.What are the main purpose of the input and output systems in a plc system

5.List some discrete output devices encountered in industrial applications

6.List some typical analog signal values found in process applications

7.Explain the difference between volatile and nonvolatile memory

8.List some common applications for personal computer in programmable controller systems

9.Which device is most commonly used to program PLC

10.Discuss the three basic instructions used in ladder logic programs

11.What is power flow in a relay ladder digram

  1. Explain the concept of logical power flow in a ladder diagram program

13.What are the two basic structures used in IL instruction statements