Engineering Drawing MCQ with answer and solution

Concept

Dimetric Projection

Formula

No formula

Step-by-step solution

- Identify axonometric projection types based on axis foreshortening. - Dimetric projection is defined as having two of the three axes equally foreshortened. - Select Option c as the correct answer.

Explanation

In dimetric projection, the object is angled such that two of the three principal axes are equally foreshortened (sharing the same scale and angle), while the third axis is foreshortened differently.

Shortcut

Remember the prefixes for axonometric projections: - Iso = equal (All 3 axes are equally foreshortened) - Di = two (2 axes are equally foreshortened) - Tri = three (All 3 axes have different foreshortening)Since the question asks for two equal axes, use Di-metric.

Common mistake

Many students mistakenly select Isometric projection because it is the most common pictorial projection, forgetting that Isometric foreshortens all three axes equally, whereas Dimetric foreshortens only two axes equally.