Question

1. What are the four different stages that engineering drawings may be used for? Give a short explanation of each stage.

2. What are the three types of oblique parallel perspectives and their characteristics?

3. What are the three types of axonometric projection and their characteristics?

4. In your own words, why are engineering drawings legal instruments?

5. For a 3D object what are the six views?

Answer 1

2) Oblique projections are of three types :-

• Cabinet:- In this receding side is scaled in actual size.
• Cavalier:- In this receding side is half of actual size.
• General:- Im this receding side is 2/3 of actual size.

3)Three types of axonometric projection are i-

Isometric projection:- In this three axis of space appears equally foreshortened.

dimetric projection :- Two of three axis appears equally foreshortened

trimetric projection:-All three axis are unequally foreshortened.

4)Engineering drawing are legal documents because it contains all the information what the project will look like in future and what demands it will carry and entertain.

5)Six different views are

• Rear view
• Top view
• Front view
• Bottom view
• Right side view
• Back view