Industrial Automation - Real-time Systems MCQs

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1. What is industrial automation primarily concerned with?
(A) Manual production
(B) Automating industrial processes
(C) Software development
(D) Data entry systems

2. Which system is commonly used to control industrial processes in real time?
(A) Operating system
(B) PLC
(C) Compiler
(D) Database

3. PLC stands for:
(A) Power Logic Circuit
(B) Process Logic Computer
(C) Programmed Line Controller
(D) Programmable Logic Controller

4. Which characteristic is essential for industrial automation systems?
(A) Deterministic behavior
(B) Best-effort execution
(C) High graphics quality
(D) Large storage

5. What is SCADA mainly used for?
(A) Local device control
(B) Memory management
(C) Code compilation
(D) Supervisory control and data acquisition

6. Which component collects real-time data from the plant?
(A) Actuator
(B) Sensor
(C) Compiler
(D) Database

7. Which device converts control signals into physical action?
(A) Sensor
(B) Controller
(C) Actuator
(D) Transmitter

8. What is the main role of a real-time controller in automation?
(A) Deterministic control execution
(B) Data storage
(C) Graphic display
(D) Report generation

9. Which network is widely used in industrial automation?
(A) Bluetooth
(B) Wi-Fi only
(C) Ethernet/IP
(D) USB

10. Which protocol is used for industrial field communication?
(A) HTTP
(B) FTP
(C) SMTP
(D) Modbus

11. What does DCS stand for?
(A) Digital Computing System
(B) Distributed Control System
(C) Data Control Software
(D) Dynamic Control Setup

12. Which system is best suited for continuous process industries?
(A) PLC
(B) DCS
(C) Desktop PC
(D) Mobile system

13. Which real-time constraint is critical in industrial automation?
(A) Average response time
(B) Network latency only
(C) User response time
(D) Worst-case response time

14. Which automation pyramid level includes sensors and actuators?
(A) Enterprise level
(B) Control level
(C) Supervisory level
(D) Field level

15. Which automation level is responsible for monitoring and supervision?
(A) Field level
(B) Control level
(C) Enterprise level
(D) Supervisory level

16. Which programming language is commonly used for PLCs?
(A) Python
(B) Ladder Logic
(C) Java
(D) C++

17. Which IEC standard defines PLC programming languages?
(A) IEC 61131-3
(B) IEC 61508
(C) ISO 9001
(D) IEEE 802.3

18. Which control strategy adjusts output based on error feedback?
(A) Open-loop control
(B) Feedforward control
(C) Closed-loop control
(D) Manual control

19. Which controller is widely used in industrial automation?
(A) PID controller
(B) PI controller
(C) Neural controller
(D) Fuzzy controller

20. What does HMI stand for?
(A) Hardware Module Interface
(B) Human Machine Interface
(C) High-level Machine Integration
(D) Human Monitoring Instrument

21. What is the function of an HMI?
(A) Execute control logic
(B) Schedule tasks
(C) Store process data
(D) Interface between operator and system

22. Which automation system emphasizes safety and reliability?
(A) Office automation
(B) Industrial automation
(C) Home automation
(D) Web automation

23. Which bus is commonly used at field level?
(A) CAN bus
(B) PCI bus
(C) USB bus
(D) SATA bus

24. Which type of real-time system is an industrial automation system?
(A) Soft real-time
(B) Best-effort
(C) Non-real-time
(D) Hard real-time

25. Which device performs logical decision making in automation?
(A) Controller
(B) Actuator
(C) Sensor
(D) Transmitter

26. Which communication ensures deterministic message delivery?
(A) Ethernet with CSMA/CD
(B) Time-triggered communication
(C) Wireless LAN
(D) Internet routing

27. Which automation benefit improves product quality?
(A) Manual inspection
(B) Consistent process control
(C) Increased downtime
(D) Human dependency

28. Which industrial network protocol supports real-time Ethernet?
(A) PROFIBUS
(B) SMTP
(C) PROFINET
(D) FTP

29. Which system coordinates multiple PLCs?
(A) Compiler
(B) SCADA
(C) Text editor
(D) Operating system

30. Which automation task requires precise timing?
(A) Inventory reporting
(B) Motion control
(C) Payroll processing
(D) Data archiving

31. Which real-time feature ensures deadlines are met?
(A) High throughput
(B) Scheduling predictability
(C) Large memory
(D) Fast graphics

32. Which controller output is based on proportional, integral, and derivative terms?
(A) PI
(B) PD
(C) ON–OFF
(D) PID

33. Which automation standard addresses functional safety?
(A) ISO 9001
(B) IEEE 754
(C) IEC 61508
(D) RFC 2616

34. Which industrial automation application requires extreme reliability?
(A) Video editing
(B) Web browsing
(C) Office printing
(D) Nuclear plant control

35. Which component measures physical quantities?
(A) Actuator
(B) HMI
(C) Controller
(D) Sensor

36. Which type of automation reduces human intervention?
(A) Manual system
(B) Semi-automatic system
(C) Fully automated system
(D) Advisory system

37. Which real-time operating system feature is important in automation?
(A) Virtual memory
(B) Gaming support
(C) Deterministic scheduling
(D) Multimedia tools

38. Which industrial protocol is serial-based?
(A) Ethernet/IP
(B) PROFINET
(C) EtherCAT
(D) Modbus RTU

39. Which automation goal improves worker safety?
(A) Hazardous task automation
(B) Faster production
(C) Increased manual work
(D) More overtime

40. Which system integrates production with enterprise planning?
(A) PLC
(B) DCS
(C) MES
(D) Sensor network

41. MES stands for:
(A) Mechanical Execution System
(B) Machine Embedded Software
(C) Modular Engineering Setup
(D) Manufacturing Execution System

42. Which level of automation handles business planning?
(A) Field level
(B) Control level
(C) Enterprise level
(D) Supervisory level

43. Which automation system monitors alarms and trends?
(A) PLC
(B) Sensor
(C) SCADA
(D) Actuator

44. Which industrial automation aspect improves efficiency?
(A) Manual control
(B) Random scheduling
(C) Process optimization
(D) Human dependency

45. Which real-time constraint violation may cause accidents?
(A) Early completion
(B) Idle CPU
(C) Deadline miss
(D) Memory overflow

46. Which automation solution supports distributed intelligence?
(A) Centralized control only
(B) Standalone PCs
(C) Manual systems
(D) Distributed control systems

47. Which industrial Ethernet protocol supports motion control?
(A) EtherCAT
(B) SMTP
(C) FTP
(D) HTTP

48. Which feature ensures repeatability in automation?
(A) Human judgment
(B) Random execution
(C) Deterministic control
(D) Manual tuning

49. Which automation approach minimizes human error?
(A) Automated control loops
(B) Manual supervision
(C) Paper documentation
(D) Trial-and-error

50. Industrial automation in real-time systems focuses on:
(A) Entertainment
(B) Deterministic, reliable process control
(C) Office productivity
(D) Social networking

Industrial Automation – Real-time Systems MCQs

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