Question

Which of the following is true for high power gears?

(a) Operated at low speed

(b) Operated at high speed

(c) Operated at moderate speed

(d) Operated at high or moderate speed

The question was asked during an interview for a job.

My question comes from Sources of Errors in Manufacturing Gears in section Measurement and Testing of Gears of Engineering Metrology

Answer 1

Correct answer is (a) Operated at low speed

To explain: High power gears are operated at low speeds generally but it has to transmit large force. Therefore for this purpose the gear teeth should specify fullest possible contact along the tooth length.