Programmable Logic Controllers (PLCs) - JSS3 Basic technology Past Questions and Answers - page 1
What is a Programmable Logic Controller (PLC)?
A type of computer used for word processing
A device used to control industrial processes
A tool for editing photos and videos
A device for playing music
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What is the primary function of a PLC?
To cook food automatically
To control electromagnetic processes
To play video games
To manage social media accounts
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Which programming language is commonly used in PLCs for creating control algorithms?
Python
C++
Ladder Logic
HTML
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What does ladder logic resemble?
Mathematical equations
Electrical relay logic diagrams
Cooking recipes
Music notes
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Which of the following is NOT a benefit of using PLCs in industrial automation?
Improved efficiency
Flexibility in programming
Decreased reliability
Accuracy in control
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What are function block diagrams (FBDs) used for in PLC programming?
Creating graphical user interfaces
Writing text based algorithms
Simplifying complex control tasks
Sending emails
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Which programming language provides a text-based approach similar to high-level programming languages?
Ladder Logic
Function block diagrams (FBD)
Structured text (ST)
Assembly language
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What do practical exercises with PLCs typically involve?
Playing video games
Programming and operating PLCs
Writing novels
Painting pictures
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Which component of a PLC converts electrical signals into physical action?
Sensor
Actuator
Switch
Battery
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What is PID control commonly used for in PLC applications?
Temperature regulation
Playing music
Driving cars
Writing emails
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