Session 1.16 PowerPoint Engineering Drawings iso and 2PP

Question 1

What are the two main types of drawing in engineering?

Answer 1

2D drawings (flat shapes) and 3D drawings (solids with faces, edges, vertices).

Question 2

What are the six principal views used in orthographic projection?

Answer 2

Top, Bottom, Right, Left, Front, Back.

Question 3

Which three orthographic views are most commonly used?

Answer 3

Front Elevation, End Elevation, and Plan Elevation.

Question 4

In first angle projection, where is the top elevation placed in relation to the front elevation?

Answer 4

Below the front elevation.

Question 5

In third angle projection, where is the plan elevation placed in relation to the front elevation?

Answer 5

Above the front elevation.

Question 6

Which countries most commonly use third angle projection?

Answer 6

USA and Australia.

Question 7

Which projection system is most commonly used in Europe?

Answer 7

First Angle Projection.

Question 8

What is isometric projection, and what angle is it drawn at?

Answer 8

A 3D axonometric projection drawn with sides at 30° to the baseline and vertical lines at 90°.

Question 9

What is two-point perspective projection?

Answer 9

A type of linear perspective using two vanishing points on the horizon line to create depth.

Question 10

Why are projection conventions important in engineering drawings?

Answer 10

They ensure accurate, standardised interpretation of drawings across industries.