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WorksheetsComputer and Control Systems
Total questions: 65
Worksheet time: 2hrs 9mins
What is the primary purpose of a PLC in an automated system?
To provide manual control of machines
To monitor, control, and automate industrial equipment and processes
To generate electrical power for industrial equipment.
To physically move components in a system
Which component of a PLC is responsible for executing the program and controlling outputs?
Input module
Central processing unit (CPU)
Power supply
Output module
How does a PLC receive information from the system it controls?
Through its output module with LEDs and motors
By reading data from sensors and switches connected to the input module
By directly powering motors and actuators
By sending commands to external devices
Which programming language is most commonly used for PLCs?
Python
Assembly
Ladder logic
HTML
What is the role of the PLC’s output module?
To process logical operations
To store the PLC’s program
To control devices like motors, lights, and solenoids based on input and program logic
To control devices like selector switches and sensors based on output and program logic
What is the primary function of CAD software in engineering and manufacturing?
To control automated machinery
To create detailed designs, drawings, and models for production
To simulate mechanical system operations for assembly
To monitor production line efficiency
What does CAD stand for in the context of engineering and design?
Computer-Assisted Drawing
Computer-Aided Design
Computer-Animated Drawing
Computer Automated Development
Which of the following is a basic benefit of using CAD software over traditional hand-drawn methods?
CAD requires less technical knowledge.
CAD allows for quicker edits, improved precision, and 3D modeling capabilities.
CAD completely eliminates the need for human design input.
CAD drawings are always simpler than hand-drawn designs.
Match the following AutoCAD commands with the correct definition:
This allows for the creation of identical shapes or patterns in a design: (a)
This allows users to organize and separate elements of a design for better visibility and control: (b)
This is used to specify and label the exact measurements of a design: (c)
This allows users to resize a design or object while maintaining its proportions: (d)
This allows the creation of a 3D object from a 2D sketch: (e)
Before downloading a program, why is it important to verify the program?
To ensure the hardware is functioning properly
To check for errors and confirm the logic meets system requirements
To back up the entire system data
To speed up the download process
Which of the following is the first step in downloading a program to a computer system?
Identify the source of the program
Open the program installation file
Check the computer's compatibility
Run the program after installation
What type of cable is typically used to connect a computer to an external device for downloading a program?
USB cable
HDMI cable
Ethernet cable
VGA cable
After downloading a program, what is the next step to confirm its functionality?
Disconnect the programming device immediately
Run a simulation or test the program in the system
Delete the original program from the computer
Save the program directly into permanent memory
What should be done if the program fails to download successfully?
Ignore the failure and proceed with system operation
Recheck the communication settings and troubleshoot for errors
Manually input the program line by line
Replace the target system entirely
What is a computer network?
wireless communication system between devices that transmits data
communication system between devices via wire that transmits data
the internet system via communication
wired and wireless system that allows devices to transmit data
Which of the following are components commonly found in a computer network? Select all that apply.
Keyboard
Printer
Modem
Hub
Router
Match the computer network component with the correct definition.
A device that connects different networks (such as your home network to the internet) and directs data to the correct device.
Router
A computer or system that stores data and provides resources or services to other computers on the network.
Server
A device that connects you to your internet provider by converting signals between your home network and the internet service provider.
Modem
A device that connects multiple devices in a network and sends incoming data to all connected devices.
Hub
Match the computer network digital component with the correct definition.
A unique string of numbers or letters assigned to each device connected to a network, allowing it to communicate with other devices over the internet or a local network.
IP Address
Wireless technology that allows devices to connect to a network or the internet without using cables.
Wi-fi
A security tool that protects a network by blocking unauthorized access while allowing legitimate communication.
Firewall
A NOT gate is known as a(n) (a) . There are (b) rows. In a truth table for a NOT gate, the output is (c) when the input is 1.
1
What are binary numbers?
A system of numbers that uses only the digits 0 and 1
A system of numbers that uses all ten digits (0-9)
A system that uses letters to represent values
A system based on powers of 10
When working with Truth Tables, the numbers 1 and 0 can have multiple vocabulary. Sort each to the correct column.
LOW
OFF
FALSE
HIGH
ON
TRUE
ENERGIZED
What is the primary function of a system control interface in a mechatronic system?
To monitor and analyze system performance
To allow operators to interact with and control the system
To provide power to the system components
To store and retrieve system data
In a system control interface, which of the following elements is typically used for user input?
Sensors
Actuators
Buttons or touchscreens
Data loggers
What is the purpose of a feedback loop in a monitoring interface?
To change the behavior of the system based on external conditions
To display the real-time data of the system’s performance
To prevent unauthorized access to the control system
To store backup data for system recovery
Which component is commonly used in system control and monitoring interfaces to display system status and alerts?
Controller
HMI (Human-Machine Interface)
Actuator
Power Supply Unit
What is the primary advantage of using fiber optic cables over copper cables?
Lower cost and easier installation
Higher data transfer speeds and longer distances
Less prone to interference but slower speeds
Compatibility with older electrical systems
A group of interconnected devices that can communicate and share resources is known as a (a) . A (b) which is abbreviated (c) is a network that covers a small geographic area (home or office building). A (d) which is abbreviated (e) is a network that covers a large geographic area (city or country).
What is the main advantage of a wireless system over a hardwired system?
Faster data transfer speeds
Greater mobility and flexibility
Lower energy consumption
More secure communication
Match the following characteristics with the correct system:
Generally more secure
Less susceptible to interferences
Typically higher data transfer speeds and greater bandwidth
Uses physical cables and wiring connections
Easily accommodate additions or expansions
Minimal installation
Eliminate the need for cables or wiring connections
Enable mobility and remote access
What is a microprocessor?
A) A device that stores data for a computer
B) A type of memory used to store instructions
C) The chip that executes instructions in a computer.
D) A peripheral device that connects the computer to the internet
Match the correct PLC vocabulary:
Timers
Activating or deactivating outputs after a specific time delay
Counters
Keeping track of events or pulses
Actuators
Output devices used to control physical processes or operations
Fault detection
Monitor for abnormal conditions
Data logging and analysis
Keeping track of data related to system
A specialized schematic that documents an industrial control logic system is called a
ladder diagram
DC circuit diagram
fail safe design
reverse design
Which of the following devices can be programmed to automate a variety of processes?
PLC
router
resistor
GUI
Match the following
A hardware component that allows a computer or device to connect to a network, either through wired Ethernet or wireless Wi-Fi. It enables data to be sent and received over the network.
Network Interface Card (NIC)
A service that creates a secure, encrypted connection over the internet, allowing users to send and receive data as if their devices were directly connected to a private network.
Virtual Private Network (VPN)
A unique string of numbers or letters assigned to each device connected to a network, allowing it to communicate with other devices over the internet or a local network.
IP Address
PLC stands for
Programmable Logic Controller
Programmable Logic Computer
Programmable Ladder Controller
Programmable Ladder Computer
The first step in a PLC cycle is the (a) .
The second step in a PLC cycle is the (b) .
The third step in a PLC cycle is the (c) .
This cycle is repeated (d) .
In a PLC:
(a) are used to give an output after a certain amount of time has passed.
(b) are used to give an output after a certain threshold has been reached.
These are used to (c) signal processing or count (d) or down (e) .
In CAD, 2D views (front, top and right/side) of a 3D object are known as
orthographic
isometric
cartesian
euclidean
In CAD, a 3D sketch is known as
orthographic
isometric
cartesian
euclidean
Using this isometric image, match the three orthographic views:
Top view
Front view
Right view
In a CAD software program, what is the purpose of the workspace?
It stores all toolbars and command menus for customizing the interface
It provides the area where the user creates, edits, and views drawings or models
It automatically converts 2D drawings into 3D assemblies
It sets the default dimensioning style for all future drawings
Match the following definitions with the CAD vocabulary word:
A plane used to create geometry that revolves around a center point
Radial Plane
Additional rotational axes around X, Y, and Z
A, B, C coordinates
A coordinate system using perpendicular X, Y, and Z axes to define locations
Cartesian Space
A mathematical model where distance and angles follow classical geometry
Euclidean Space
Which statement correctly compares Cartesian and Euclidean space?
Cartesian defines geometry rules; Euclidean defines axis directions
Cartesian provides the axes; Euclidean provides the geometric rules applied within those axes
Both define rotational planes only
Both are used only when constructing radial features
This refers to the maximum amount of data that can be transmitted in a network in a given amount of time.
Latency
Bandwidth
IP Address
Gateway
Which statement best describes a star network shape?
All devices connect to a single central device, like spokes around a hub
All devices share one long cable
Devices are connected in a circular loop
Devices communicate only through wireless access points
The spoke network shape shown is the same shape as a star network. What do the spokes represent?
A backup path used only if the main cable fails
A direct connection from each device to a central device
A loop connection that repeats signals
A cable that connects only wireless devices
What is the defining feature of a bus network?
Devices connect in a straight line using a single main cable
All devices connect directly to one central switch
Devices are arranged in a ring shape
Each device has its own private connection path
Which characteristic is true of a bus network?
Fun Fact: Bus Networks are outdated and not very common anymore.
If the main cable fails, the entire network stops working
Each device keeps functioning even if another device disconnects
Devices automatically reroute data through alternate paths
Only wireless devices can connect to the cable
Match the following network shapes
Bus Network
Star Network
Mesh Network
What is a key advantage of a mesh network?
All devices rely on one central router for communication
Data can travel through multiple paths, making the network more reliable
Fewer nodes improve speed by limiting connections
Every device must be connected with a physical cable
What does the term network shape (or network topology) refer to?
The physical size of the devices connected to a network
The arrangement or layout of how devices and cables are connected
The type of software used to control network traffic
he speed at which data travels through the network
Match the Truth Tables:
AND
OR
NAND
NOR
NOT
Match the following
Two insulated copper wires twisted together to reduce interference. Used in phone lines and some networks.
Twisted Pair Cable
A single copper wire in the center with a metal shield around it. Used for cable TV and older networking.
Coaxial Cable
Sends data as light through thin glass or plastic fibers. Very fast and used for long-distance internet.
Fiber Optic Cable
Carries high-definition video and audio between devices like TVs, monitors, and game systems.
HMDI Cable
Standard cable used to connect computers to networks, routers, and switches.
Ethernet
Match the following
Twisted Pair Cable
Coaxial Cable
Fiber Optic Cable
HMDI Cable
Ethernet
Used to connect devices such as keyboards, mice, flash drives, and chargers; carries power and data.
USB Cable
Ethernet Cable
Fiber Optic Cable
Coaxial Cable
HDMI Cable
A video cable used to connect computers to monitors or projectors (slightly outdated). Select the name and the image!
VGA Cable
USB Cable
An industrial communication cable used in automation systems to connect PLCs and sensors.
Select the name and the image!
USB Cable
PROFIBUS Cable
Match the following computer programming vocabulary words:
A named storage location that holds a value which can change while the program runs.
Variable
A structure that repeats a block of code multiple times until a condition is met.
Loop
A reusable block of code that performs a specific task and can be called whenever needed.
Function
The name given to variables, functions, or other elements in a program so the computer can reference them.
Identifier
A decision-making structure that runs one block of code if a condition is true, and another block else if it is false.
If-Else
Based on the ladder logic diagram, what is currently the status of CR1?
It is activated
It is not activated
Unable to tell
There is no CR1
Based on the ladder logic diagram, if PB2 is pressed, what occurs?
CR1 is activated
CR1 is not activated
CR2 is activated
CR2 is not activated
Based on the ladder logic diagram, if CR1 is activated, what occurs to CR3?
It is activated
It is not activated
Unable to tell
It has no relation
Based on the ladder logic diagram, if CR2 is activated but not CR1, what occurs to CR3?
It is activated
It is not activated
Unable to tell
It has no relation
Based on the ladder logic diagram, what must occur for M1 to activated?
CR1 is activated
CR2 is activated
CR3 is activated
CR1 cannot be activated
CR2 cannot be activated
In Ladder Logic, the vertical lines are called (a) and they represent (b) . The horizontal lines are called (c) and they must be read from (d) to (e) .
Name that programming code command:
Martha wants to repeat a line of code until a certain number: (a) .
Sally Sue wantsto create a small device that uses a tiny processor to control humidity, what processor is this: (b) .
Gertrude programs code that crashes. What should she do? (c) .
Harper wants her LED to blink if a number is typed. What should she do? (d)
