Worksheets6 Basic structure of a plc Quiz
Total questions: 12
Worksheet time: 9mins
What does PLC stand for in the context of automation?
Programmable Logic Controller
Personal Laptop Computer
Public Limited Company
Primary Learning Center
Which of the following is a function of a PLC?
Controlling a machine or process
Storing large amounts of data
Providing internet access
Generating electrical power
What is the primary function of a PLC in a process?
To make a process more efficient and cost-effective
To increase the complexity of a process
To manually control a process
To eliminate the need for input devices
What role does the PLC play in the cooling system of a power station?
It opens the thermal switch.
It senses the closed switch and sends a signal to a motorised valve.
It directly cools the generator.
It shuts down the generator.
What are the components of a PLC system?
A computer microprocessor, programmable logic control software, and an interface card
A computer microprocessor, a hard drive, and a monitor
A keyboard, a mouse, and a printer
A power supply, a fan, and a graphics card
Which component is responsible for processing in a PLC architecture?
Output interface
Processor
Memory
Input interface
How does a PLC make decisions?
Based on random inputs
Based on inputs and instructions from its memory
By following a fixed sequence
By manual control
Before PLCs, how were automated systems controlled?
By physical hard-wired relay devices
By wireless remote controls
By digital interfaces
By voice commands
What does Step 1 in the Ladder Logic Program instruct the PLC to do?
Switch on the red lamp when the red button is pressed.
Switch on the green lamp when the green button is pressed.
Switch off the green lamp when the red button is pressed.
Switch off the red lamp when the green button is pressed.
What action is performed in Step 2 of the Ladder Logic Program?
Switch on the green lamp when the green button is pressed.
Switch off the red lamp when the red button is pressed.
Switch on the red lamp when the red button is pressed.
Switch off the green lamp when the green button is pressed.
What does Step 3 in the Ladder Logic Program do?
Turns on the green light
Turns on the red light
Switches on the conveyor motor
Turns off all lights
In the Ladder Logic Program, what condition must be met for the conveyor motor to switch on?
Only the green button is pressed
Only the red button is pressed
Both the green and red buttons are pressed
Neither button is pressed
