DP Design Technology Questionbank

Which of the following describes a conceptual model?

I. A model that is used to help us develop and understand ideas

II. A scale or full-size representation of a product used to gain feedback from users

III. Photorealistic computer-aided design (CAD)-based interactive models

A. I and II

B. I and III

C. II and III

D. I, II and III

Many furniture manufacturers provide graphical models to help customers assemble their products, see Figure 3.

Figure 3: An example of a graphical model

[Source: Image designed by Mike Oliver]

What perspective style is used in the image?

A. Linear perspective

B. Two-point perspective

C. One-point perspective

D. Three-point perspective

Explain the benefit of using freehand sketches, physical models and CAD solid models in the development of the horn of the Gramovox^® bluetooth speaker.

Outline why sketches would be used in the development of the Greenfeet Vertue shoe.

Figure 2 shows a freehand drawing and an orthographic projection of a chair.

Figure 2: Different representations of a chair

[Source: [freehand drawing of a chair] © International Baccalaureate Organization 2020.
[orthographic drawing of a chair] © International Baccalaureate Organization 2020.]

What is an advantage of using a freehand drawing rather than an orthographic drawing?

A. More accurate

B. Allows quick exploration of ideas

C. Can be given to a manufacturer to make it

D. All parts drawn in proportion

Outline why isometric drawings are often used in car design.

Explain why perspective drawings, orthographic drawings and exploded isometric drawings would be used in the design of the Bailey Wood Plane.

List two forms of graphical modelling used by car designers.

Explain the benefit of using freehand sketches, physical models and CAD solid models in the development of the horn of the Gramovox^® bluetooth speaker.

Figure 3 shows a car design modelled from clay.

Figure 3: A clay model of a car

[Source: https://commons.wikimedia.org/wiki/File:Opel_50_Jahre_Design_(14541643013).jpg, by Robert Basic]

Which of the following best describes a model that shows exactly how a product could look but not function?

A. Mock-up model

B. Prototype model

C. Realistic model

D. Aesthetic model

Explain the role of rapid prototyping, instrumented physical models and computer aided design (CAD) in the design of the modern rotor sail.

Explain why prototypes would be used in the testing and evaluation of the brick made by the Treak community.

Explain how instrumented models have been used in the development of Boeing 787 wings.

List one reason why clay modelling is still used to prototype models in processes such as car design.

Which type of analysis would you use to simulate unknown factors, such as stresses within a joint, in products?

A. Market analysis

B. Finite element analysis (FEA)

C. Life cycle analysis (LCA)

D. Work flow analysis

Explain how finite element analysis (FEA) can be used to test products with multiple parts.

Outline how data modelling could have been used in the development of the Aria smartphone app in Figure 10.

Explain the benefit of using freehand sketches, physical models and CAD solid models in the development of the horn of the Gramovox^® bluetooth speaker.

Outline how finite element analysis (FEA) could be used to further develop the process during the component’s manufacture by injection moulding.

Outline why solid modelling rather than surface modelling would have been used in the computer-aided design (CAD) development of the component designed in Figure 1.

Explain the role of rapid prototyping, instrumented physical models and computer aided design (CAD) in the design of the modern rotor sail.

Explain one advantage of using Finite element analysis (FEA) and one advantage of using physical models for testing the Zuperzozial kitchenware.

Figure 3 shows a photorealistic model of a computer mouse. The model gives no internal data for manufacture using computer-aided manufacturing (CAM).

Figure 3: A photorealistic model of a computer mouse

[Source: Image by Eduemoni www.wikipedia.com]

What type of model is shown in Figure 3?

A. Solid model

B. Graphic model

C. Surface model

D. Physical model

List two advantages of using finite element analysis (FEA) for the design of the Boeing 787 wings.

Explain why solid modelling is advantageous in the development of the Dish Doctor.

Figure 3 shows people in a museum. By interacting with the exhibit they are able to understand how the image displayed on the screen feels.

Figure 3: People interacting with an exhibit in a museum

[Source: image provided with kind permission from Christopher Dean]

Which technology enables the people to understand what the image feels like through their sense of touch?

A. Animation

B. Haptic

C. Motion capture

D. Virtual prototyping

Which of the following would enable a designer to understand the structural forces acting on a bridge support?

A. Data modelling

B. Bottom-up Modelling

C. Finite element analysis (FEA)

D. Virtual prototyping

In computer-aided design (CAD), when a model is created that has no interior material and is just a visual representation of the final product, this is considered as a…

A. Bottom up model

B. Surface model

C. Solid model

D. Top down model

Describe the difference between surface and solid modelling.

Explain why digital humans are used in car interior design.

Explain why finite element analysis (FEA) would be used in the development of the drone.

Explain the role of rapid prototyping, instrumented physical models and computer aided design (CAD) in the design of the modern rotor sail.

Which of the following rapid prototyping techniques does not require structural supports during the build?

A. Selective laser sintering (SLS)

B. Laminated object manufacture (LOM)

C. Fused disposition modelling (FDM)

D. Stereolithography

What rapid prototyping process uses lasers to solidify layers from a liquid resin?

A. Stereolithography (SLA)

B. Fused deposition modelling (FDM)

C. Selective laser sintering (SLS)

D. Laminated object manufacturing (LOM)