N-Level Design and Technology 2 — Questions and Answers
Question 1: What is the main purpose of a jig in the manufacturing process?
- To sharpen cutting tools before use
- To ensure consistent and accurate positioning of a workpiece (Correct answer)
- To mix adhesives for joining materials together
- To smooth the surface finish of a completed product
Correct answer: To ensure consistent and accurate positioning of a workpiece
A jig holds and guides a workpiece in a specific position to ensure consistency and accuracy when repeating the same operation many times.
Question 2: Which mechanism converts rotary (circular) motion into linear (straight-line) motion?
- Bevel gear pair
- Worm and wheel gear
- Rack and pinion (Correct answer)
- Belt and pulley system
Correct answer: Rack and pinion
A rack and pinion converts rotary motion to linear motion — as the circular pinion rotates, it drives the straight rack in a straight line.
Question 3: Which measuring instrument is used to accurately measure both internal and external dimensions of an object?
- Steel rule
- Try square
- Vernier caliper (Correct answer)
- Marking gauge
Correct answer: Vernier caliper
A vernier caliper can precisely measure internal dimensions (e.g., inside a hole), external dimensions (e.g., outside diameter), and depth.
Question 4: Which finishing process is applied to steel products to protect them from rusting?
- Annealing
- Galvanizing (Correct answer)
- Tempering
- Case hardening
Correct answer: Galvanizing
Galvanizing coats steel with a layer of zinc, which acts as both a physical barrier and a sacrificial anode to prevent rusting.
Question 5: In product design, what does ergonomics refer to?
- The visual appearance and aesthetic style of a product
- The cost-effectiveness of manufacturing a product at scale
- Designing products to fit human body measurements and capabilities (Correct answer)
- The environmental impact of a product's raw materials
Correct answer: Designing products to fit human body measurements and capabilities
Ergonomics is the science of designing products to suit human physical and cognitive needs, improving comfort, efficiency, and safety during use.
Question 6: What is the primary purpose of creating a prototype during the design process?
- To produce the final product ready for sale to customers
- To test and evaluate design ideas and identify problems before full production (Correct answer)
- To produce technical drawings for the manufacturing department
- To calculate the total cost of materials needed for production
Correct answer: To test and evaluate design ideas and identify problems before full production
A prototype allows designers to test functionality, ergonomics, and aesthetics, identifying problems before committing to expensive full-scale production.
Question 7: Which type of technical drawing provides exact dimensions and multiple flat views, and is used by manufacturers to produce components accurately?
- Perspective drawing
- Freehand sketch
- Oblique drawing
- Orthographic projection (Correct answer)
Correct answer: Orthographic projection
Orthographic projection shows front, side, and plan views with exact dimensions, giving manufacturers all the information needed to produce a component accurately.
N-Level Design and Technology 2
What is the main purpose of a jig in the manufacturing process?