Exam questions

Question 1

Explain the term sub‑assembly.

Answer 1

Sub-assembly is a group of components that function together as a single unit

Question 2

Explain the purpose of a detail view.

Answer 2

A detail view gives a larger/bigger view of an area of a part allowing for greater clarity in the view

Question 3

What is the purpose of an exploded isometric view?

Answer 3

• Shows how the parts fit together
• Shows how many parts there are
• Allows someone to see how to assemble the object
• Allows someone to see the order of assembly

Question 4

Describe two advantages to the CAD technician of using top‑down
modelling

Answer 4

• Top-down modelling allows you to project geometry from other parts
• Top-down modelling allows parts to be modelled in situ and will not need constraints to assemble

Question 5

Explain the term tangency

Answer 5

• When two circles/arcs connect at a single point
• When two circles/arcs connect but do not overlap
• The smooth transition from one arc to the next
• The smooth transition from an arc to a straight line

Question 6

Describe three benefits of using rendered 3D CAD illustrations to show design concepts to a client

Answer 6

• Photo real image of how the vehicle will look
• Realistic representation of materials
• Useful for users who cannot read or interpret 2D drawings
• Rendered CAD pictorials can be sent out to users via email
• Alternative versions showing different colours or finishes can be quickly and easily created
• Light sources can be simulated

Question 7

Purpose of a sited environment?

Answer 7

• A rendered scene that places an object in a physical setting/environment
• A rendered scene that places the object in a specific context and gives a greater sense of believability
• A rendered scene that uses the surrounding environment to show how products appears in light/sunny/dark conditions
• Gives a sense of scale

Question 8

Explain why a raster file format is used?

Answer 8

• High resolution images allow for photorealistic images to be saved as each pixel can be a different colour allowing for subtle changes in colour
• Allows for rich and detailed images due to use of pixels over shapes
• Do not require specialist software to open so can be used almost anywhere and on any device

Question 9

Explain why a stepped section was used in the drawing above.

Answer 9

Stepped section cuts through the object on two planes meaning we can see the details clearly of the outer locating holes as well as the holes on the central part of the object

Question 10

Purpose of crop marks

Answer 10

• Identifies the edge of the trimmed publication so that post printing, it is cut to the correct size
• Identifies bleed area to ensure edge-to-edge printing

Question 11

Describe two advantages of the company using photographs they own the rights to

Question 12

What is the purpose of a promotional graphic

Answer 12

Allows manufacturer to advertise their products/services to potential customers.

Question 13

What is the purpose of a production graphic

Answer 13

Aids with assembly of the product.

Question 14

Explain why the choice of typeface is an important aspect for the
company to consider when creating the online magazine

Answer 14

• Clarity and readability
• Physical size of device will determine size of text being viewed
• Typeface may reflect style of magazine/target market

Question 15

Explain the purpose of a drop cap.

Answer 15

• The contrast in text size creates emphasis
• To lead the readers eye to the start of a paragraph/section of text