Deck 14: Pictorial Drawings and Technical Illustrations

Question 1

Name and describe the three types of perspective drawings.

Answer 1

. One-point or parallel perspective has one vanishing point and is used most often when drawing interiors of rooms. Two-point or angular perspective is the most popular and is used to illustrate exteriors of houses, small buildings, civil engineering projects, and, occasionally, machine parts. The third type of perspective is three-point perspective, which has three vanishing points and is used to illustrate objects having great vertical measurements, such as tall buildings.

Question 2

Describe the proper placement of extension lines, dimen- sion lines, and dimension text when doing isometric dimensioning.

Answer 2

. When doing isometric dimensioning, extension lines and dimension lines are drawn in the same isometric plane as the object being dimensioned. This gives the appearance of each dimension lying in the plane of the extension lines. The dimension text is also drawn in the isometric plane for a natural appearance.

Question 3

List at least three professional uses for pictorial drawings.

Answer 3

Pictorial drawings are used in instruction manuals, parts catalogs, advertising literature, technical reports, and presentations, and as aids in the assembly and construction of products.

Question 4

Name the most realistic type of pictorial illustration.

Question 5

Give the shape of an isometric sphere.

Question 6

Identify the proper placement of arrowheads on isometric dimensions.

Question 7

Explain the difference between isometric lines and noni- sometric lines.

Question 8

What is the basic intent of pictorial drawings? AnD TECHniCAl illusTRATions

Question 9

Describe parametric solid modeling and define the term parameters in your definition.

Question 10

Briefly define solid models and give at least two applications PRoblEms for solid models.

Question 11

Describe the greatest realism in pictorial presentation that can be achieved by CADD systems.

Question 12

Give two names that identify the centerlines used in exploded views to show the connection between part and subassembly axis and the thin solid extension lines that can be used to connect among noncylindrical features, parts, and subassemblies.

Question 13

Give the angles between each of these three isometric axes.

Question 14

List the three methods of oblique drawing.

Question 15

Compare dimetric and isometric projection.

Question 16

Briefly describe technical illustration.

Question 17

Define oblique drawing.

Question 18

Identify the lines that can be measured directly and trans- ferred to the isometric drawing.

Question 19

List the three basic forms of isometric drawing.

Question 20

Describe an exploded assembly and identify the drawing method most commonly used to create exploded assemblies.