Programmable Logic Controller (PLC) MCQ Questions and Answers for Practice

Welcome to our Programmable Logic Controller (PLC) MCQ Quiz category! These multiple-choice questions are designed to help students and exam aspirants test and enhance their understanding of PLCs, a crucial topic in automation and control systems.

About Programmable Logic Controller (PLC) MCQ Questions

Programmable Logic Controller (PLC) MCQs cover a wide range of topics, including basic principles, programming languages, hardware components, and practical applications. These questions are designed to provide a comprehensive understanding of PLCs, ensuring that you are well-prepared for any challenge in your academic and professional journey.

Why Practice Programmable Logic Controller (PLC) Objective Questions?

Practicing PLC objective questions is essential for several reasons. It helps you prepare for school and college exams, enhances your problem-solving skills, and boosts your confidence for competitive exams and job interviews. Regular practice ensures that you have a solid grasp of the key concepts and can apply them effectively in real-world scenarios.

Who Should Use These MCQs?

  • Students preparing for school or college exams
  • Competitive exam aspirants
  • Candidates preparing for interviews

Programmable Logic Controller (PLC) MCQ Questions for Practice

1. PLC is an acronym of _______________ Logic Controller

2. Unitary PLC has 20 inputs and __________ outputs

3. Ladder Logic Programming consists primarily of

4. PLCs having less than __________ inputs and outputs are called as Small PLC

5. In a PLC, scan time refers to the amount of time in which

6. HMI means __________ Machine Interface

7. Medium PLC has _____________ inputs and outputs

8. Main difference between online and offline PLC programming is

9. ______________ language can be programmed interactively with the PLC

10. For a 16-bit register, which is the largest integer number a PLC counter function can reach

11. To protect a PLC from any incoming surges from the field, an isolated device such as ____________ is used.

12. In PLC programming, a retentive function is one that

13. An OR function implemented in Ladder logic uses

14. A good application for a timed interrupt in a PLC program would be

15. The __________________ instruction is used to turn an output ON or OFF after its time has been on for a preset time interval

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