Question

What is the effect of centre distance between two gears on velocity ratio of involute gear pair?

(a) Less for less velocity ratio

(b) Less for more in velocity ratio

(c) More or less for more velocity ratio

(d) No effect

This question was posed to me in an interview for job.

This is a very interesting question from Involute Curve topic in chapter Measurement and Testing of Gears of Engineering Metrology

Answer 1

Right answer is (d) No effect

The best I can explain: Variations in the centre distance between 2 gears have no effect on the velocity ratio between an involute gears pair. It is an advantage associated with the involute for the flank curve of gear.