Computer and Control Systems

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

Tags

NGSS.HS-ETS1-4

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)  

• Mirroring
• Layering
• Dimensioning
• Scaling
• Extruding

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