Question

The representative factor is 0.02. The actual length is 50 cm. Find the length of drawing.

(a) 10 cm

(b) 5 cm

(c) 0.25 cm

(d) 10 mm

The question was posed to me by my school principal while I was bunking the class.

I'm obligated to ask this question of Representative Factor in division Scales of Engineering Drawing

Answer 1

Correct choice is (d) 10 mm

Easiest explanation: The representative factor given is 0.02 (less than one), shows the reducing scale. Representative factor = ratio of length in drawing to actual length. R.F. = (length in drawing)/50 cm = 0.02. Length in drawing = 0.02 x 50 cm = 1 cm = 10 mm.