National 5 Engineering Science SQA

Full course content, a smart revision plan and instant past paper feedback for National 5 Engineering Science SQA.

Content Overview

50 topics in 7 modules

☑️ The Systems Approach 11 topics
- Systems and Sub-System Diagrams
- Input-Process-Output and Feedback Loops
- Open and Closed-Loop Control
- Interaction of Sub-Systems
- Conservation of Energy
- Calculations Involving Forms of Energy
- Energy Transfers, Losses and Transformations in a System
- Energy Audits and Calculation of Overall Efficiency
- Applied Calculations Involving Efficiency, Work Done and Power
- Calculations
- Engineering Roles and Disciplines
☑️ Impacts of Engineering 14 topics
- Social and Economic Impacts of Engineering
- Environmental Impacts of Engineering
- Engineering Solutions Contributing to Tackling Climate Change
- Emerging Technologies and Engineering Challenges
- Functions and Purposes of Analogue Electronic Control System Elements
- Describing the Function of a Circuit
- Ohm's Law
- Resistors in Series and Parallel
- Fixed-Voltage Divider Calculations
- LDR and NTC Thermistor
- Relays
- Protection Diodes
- Switching Function of a Transistor
- Operating an Electronic Control Circuit
☑️ Digital Electronic Control Systems 5 topics
- AND, OR and NOT Gates
- Using Microcontrollers
- Microcontroller-Based Control Systems
- Flowcharts
- Programs
☑️ Drive Systems 6 topics
- Motion in Mechanical Systems
- Simple Gear Train Systems, Idler Gears, Diagrams
- Compound Gear Trains
- Calculating Speed Ratio of Simple and Compound Gear Trains
- Effects of Friction in Drive Systems
- British Standards Symbols
☑️ Pneumatics 4 topics
- Standard Pneumatic Components
- Pneumatic Time Delay Circuits
- Relationships between Force, Pressure and Area in Single and Double-Acting Cylinders
- Controlling Speed and Force
☑️ Structures and Forces 7 topics
- Effects of a Force (Tensile and Compressive)
- Concurrent Forces and Equilibrium
- Using Triangle of Forces and Free Body Diagrams
- Non-Concurrent Forces an Parallel Forces
- Moment of a Force
- Calculations Involving the Principle of Moments
- Balance Beam, Simply-Supported Beam and Reaction Forces
☑️ Materials 3 topics
- Selecting Appropriate Material for a Given Application
- Calculating the Relationship between Direct Stress, Force and Area
- Calculating Strain

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National 5 Engineering Science SQA Revision Content

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National 5 Engineering Science SQA - The Systems Approach - Systems and Sub-System Diagrams Content Preview

The Systems Approach

Revision ContentExam Question

Systems and Sub-System Diagrams

System Overview

A system can be described as a set of interconnected components that work together to achieve a common goal.
In large, complex systems, it can be helpful to break down the system into smaller parts or sub-systems for better understanding and management.

System Diagrams

System diagrams are visual representations of the various elements within a system.
They show the components of the system, how they're connected and their working relationships.
They also show the system's boundaries, which outline the extent of the system.

Sub-system Diagrams

Sub-system diagrams are diagrams of the smaller parts of a system.
They provide a detailed view of a part of the system, showing specific processes and functions of that sub-system.
Sub-system diagrams make it easier to study and manage complex systems by breaking them down into more manageable parts.

Identifying Sub-systems

A sub-system is identifiable when it has a specific functionality within a system that can be isolated and studied separately.
Sub-systems can be broken down further into smaller sub-systems.

Interconnections

Understanding how sub-systems connect and interact is crucial for understanding the system as a whole.
Interconnections can take the form of data, control signals, power, or physical connections.

Use in Problem Solving

System and sub-system diagrams are useful tools in engineering problem solving and design processes.
They can help identify problems, guide system modifications, and aid in the development of new systems.

Symbols in Diagrams

Diagrams use a variety of symbols to represent real-world components and their relationships.
It is essential to understand the meaning of these symbols to accurately interpret the diagrams.

Block Diagrams

Block diagrams are a type of system diagram that uses blocks to represent system components and arrows to show the flow of information or signals.
They are a high-level representation of a system, showing major elements and their interconnections, often without detail about the inner workings of the elements.

Please remember to reference your course material and textbooks to calibrate your understanding of this topic.

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