Question

The representative factor is 2, the drawing length is 100 mm. Find the actual length.

(a) 20 cm

(b) 50 mm

(c) 20 mm

(d) 50 cm

I had been asked this question during an interview for a job.

I want to ask this question from Representative Factor topic in portion Scales of Engineering Drawing

Answer 1

Correct option is (b) 50 mm

For explanation I would say: The scale is enlarging scale. The ratio of length of drawing to actual length gives the representative factor. 100 mm / actual length = 2, actual length = 100 mm/2 = actual length = 50 mm (or) 5 cm.