Understanding Programmable Logic Controllers

What is the primary function of a Programmable Logic Controller (PLC)?

• To perform complex mathematical calculations

• To control industrial machinery and processes

• To store large amounts of data

• To design electrical circuits

Which of the following is a common programming language used for PLCs?

• Python

• Ladder Logic

• Java

• HTML

In a PLC, what does the term "I/O" stand for?

• Input/Output

• Inside/Outside

• Increase/Offset

• Internal/Operational

Which component of a PLC is responsible for executing the control program?

• Power Supply

• Central Processing Unit (CPU)

• Input Module

• Output Module

What is the typical unit of measurement for the scan time of a PLC?

• Seconds

• Milliseconds

• Minutes

• Hours

Which of the following is NOT a type of PLC?

• Compact PLC

• Modular PLC

• Distributed PLC

• Centralised PLC

What is the main advantage of using a PLC over traditional relay-based control systems?

• Higher power consumption

• Greater flexibility and programmability

• Larger physical size

• Increased complexity

Which of the following is a common application of PLCs?

• Word processing

• Industrial automation

• Web development

• Graphic design

What does the term "ladder logic" refer to in the context of PLCs?

• A type of hardware component

• A graphical programming language

• A method of data storage

• A type of electrical wiring

Which of the following is a benefit of using PLCs in manufacturing?

• Increased manual labour

• Reduced system reliability

• Enhanced process control

• Higher operational costs