DP Design Technology Questionbank

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.

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.

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