PLC MCQ Quiz Questions and Answer PDF Download

PLC MCQ Quiz Questions and Answer | Programmable Logic Controller MCQ | PLC Multiple Choice Questions & Answer

PLC MCQ Quiz: A programmable logic controller (PLC) is a small, modular solid state computer with customized instructions for performing a particular task. This is an Programmable Logic Controller (PLC) Multiple choice questions and answer. PLC is a great career to enter right now, because of highest paying jobs in the PLC engineering industry and various sector. PLC is an very interesting field. Willing candidates may try to learn the basic of Programmable Logic Controller. Here we have given 30 PLC MCQ Question and Answer. Additionally we have given the PLC Multiple choice questions PDF.

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PLC MCQ Questions With Answer PDF

1.  Which is the first PLC model?

  1. PLC 086
  2. PLC 085
  3. PLC 084
  4. None

Answer: PLC 084

2. How many operation steps does the programmable logic controller have?

  1. Two
  2. One
  3. Four
  4. Three

Answer: Three

3. In PLC operation ___________ checks the status at the input side

  1. Program scan
  2. Output scan
  3. Input scan
  4. None

Answer: Input scan

4. The components that make PLC works can be divided into ____________ core areas

  1. Two
  2. One
  3. Four
  4. Three

Answer: Four

5. In PLC operation ___________ retrieves the data into an output module

  1. Output scan
  2. Input scan
  3. Program scan
  4. None of the above

Answer: Output scan

6. Before PLC’s was created many industries used ______

  1. Capacitors
  2. Relays
  3. Resistors
  4. None of the above

Answer: Relays

7. What are the types of programmable logic controllers?

  1. Modular, uniform PLC
  2. Fixed and Modular PLC
  3. Fixed, uniform PLC
  4. None of the above

Answer: Fixed and Modular PLC

8. The relays consist of ________

  1. Load circuit
  2. Control circuit
  3. All of above
  4. None of above

Answer: All of above

9. Who invented the Programmable Logic Controller (PLC)?

  1. Dick Morley
  2. Jonas Wenstrom
  3. Thomas Davenport
  4. None of the above

Answer: Dick Morley

10. In modular programmable logic controller _______

  1. Output is fixed
  2. Input is fixed
  3. All of above
  4. None of above

Answer: All of above

11. The control logic in a programmable logic controller can be programmed by _____

  1. Sequential logic
  2. Structured text
  3. FBD , ladder logic
  4. All of the above

Answer: All of the above

12. CCTV cameras is an example for ________ automation

  1. Office automation
  2. Scientific automation
  3. Industrial automation
  4. Building automation

Answer: Office automation

13. The PLC’s can be programmed in _______

  1. Instruction list, Functional block diagram
  2. Ladder logic, structured text
  3. Sequential function chart
  4. All of the above

Answer: Ladder logic, structured text

14. The programmable logic controllers are used in _____

  1. Cement manufacturing
  2. Process automation plants
  3. Glass and paper industry
  4. All of the above

Answer: All of the above

15. The sequences are classified into _________

  1. One
  2. Two
  3. Three
  4. Four

Answer: Three

16. In modular type PLC, the PLC’s are classified into _______

  1. Transistor output PLC
  2. Relay output PLC
  3. Triac output PLC
  4. All of the above

Answer: All of the above

17. In fixed programmable logic controller _______

  1. Output is fixed
  2. Input is fixed
  3. None of the above
  4. All of above

Answer: All of above

18. In the water level storage tank, the manual mode program controls the water level by monitoring the _________ switch input

  1. High sensor switch
  2. Low sensor switch
  3. None of above
  4. All of above

Answer: Low sensor switch

19. The programmable logic controllers are classified into _________ according to physical size in modular type PLC

  1. Micro PLC, Nano PLC
  2. Nano PLC, Mini PLC, Macro PLC
  3. Mini PLC, Micro PLC
  4. None of the above

Answer: All of above

20. The programmable logic controller is classified into __________

  1. Three
  2. One
  3. Four
  4. Two

Answer: Two

21. The advantages of PLC are ______

  1. Reliability is high
  2. Small in size
  3. Easy maintenance
  4. All of the above

Answer: All of the above

22.  __________ is an example for light automation?

  1. Street solar lightening
  2. Automated bottle filling stations
  3. Rocket launching
  4. Smoke detectors

Answer: Street solar lightening

23.  The CPU has ______

  1. Processor
  2. Power supply
  3. Memory system
  4. All of the above

Answer: All of the above

24. Which one is the correct sequence for PLC operation?

  1. Self-test, logic scan, output scan, input scan
  2. Self-test, input scan, output scan, logic scan
  3. Self-test z, input scan, logic scan, output scan
  4. None of the above

Answer: Self-test, input scan, logic scan, output scan

25.  __________ is an example for scientific automation?

  1. Street solar lightening
  2. Automated bottle filling stations
  3. Rocket launching
  4. Smoke detectors

Answer: Rocket launching

26.  _________ are the components that are required to change or create a program

  1. Programming software
  2. Connector cable
  3. PLC, programming device
  4. All of the above

Answer: All of the above

27. The visual programming language also called as _______

  1. Ladder logic
  2. Relay logic
  3. All of the above
  4. Controller logic

Answer: Ladder logic

28. The DVP-PLC external input-output points are numbered in _________ format

  1. Octal format
  2. Decimal format
  3. Binary format
  4. None

Answer: Octal format

29.  The PLC internally operates, stores, and calculates the value in _____

  1. Decimal format
  2. Octal format
  3. Binary format
  4. None

Answer: Binary 

30. What are the components that make the programmable logic controller work?

  1. Power supply
  2. CPU
  3. Input and output module
  4. All of the above

Answer: All of the above

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