Tech (Liam) Flashcards
(30 cards)
What does IDMEC stand for in the design process?
Investigate, Design, Make, Evaluate, Communicate.
What happens during the ‘Investigate’ stage of IDMEC?
You research and find out more about the problem or need.
What do you do in the ‘Design’ stage?
You draw and plan how your solution will look and work.
What is the purpose of the ‘Make’ stage?
To build the actual product or solution using materials and tools.
What happens in the ‘Evaluate’ stage?
You test your solution and decide if it works or can be improved.
What does ‘Communicate’ mean in IDMEC?
Sharing your design ideas and results using drawings or presentations.
What is a mechanical system?
A system made of moving parts that transfers or changes motion.
What is a first-class lever? Give an example.
Fulcrum in the middle, load on one side, effort on the other. Example: Seesaw.
What is a second-class lever? Give an example.
Load is in the middle, fulcrum and effort at the ends. Example: Wheelbarrow.
What is a third-class lever? Give an example.
Effort in the middle, fulcrum and load at the ends. Example: Tweezers.
What is Mechanical Advantage (MA)?
It shows how much a machine multiplies the effort force.
What does MA > 1 mean?
The machine makes work easier; it increases force.
What does MA < 1 mean?
The machine makes work faster or over a longer distance; it increases speed.
What does MA = 1 mean?
The machine changes the direction of the force only (e.g., first-class lever like a seesaw).
What is the main difference between pneumatics and hydraulics?
Pneumatics use compressed air; hydraulics use liquid (usually oil or water).
Which is stronger – pneumatics or hydraulics?
Hydraulics – liquids cannot be compressed, so they give more force.
What is graphic communication in Technology?
Using drawings to show design ideas clearly.
What is a dimension line used for?
To show the size of an object in a drawing.
What is a hidden line?
A dashed line showing parts that cannot be seen directly.
What is a scale drawing?
A drawing that is larger or smaller than the real object but keeps the same proportions.
What is freehand sketching?
Drawing quickly without tools to show a design idea.
Why is freehand sketching important in Technology?
It helps you show ideas quickly and clearly before making technical drawings.
What is the purpose of a structure?
To support a load or give shape to an object.
Name two types of structures.
Natural (e.g., tree) and man-made (e.g., bridge).
