Question

The ratio of a length of an actual object to the length of drawing is given as 5. Find the scale and R.F. (Representative factor).

(a) 1:5, 1/5

(b) 5:1, 1/5

(c) 1:5, 5

(d) 5:1, 5

I got this question during an online interview.

The above asked question is from Representative Factor topic in division Scales of Engineering Drawing

Answer 1

The correct option is (a) 1:5, 1/5

To explain: Given that the ratio of actual length to length of drawing which is reciprocal of R.F. So the R.F. for given values is 1/5. From the given information it can be understood that the actual object is 5 times larger than the drawing, so the scale is reducing scale i.e. 1:5.