Question

What is a cyclic error?

(a) Mean value of the discrete values of variation in the kinematic error of the gear taken for all cycles during one revolution

(b) Mean value of the range of variation in the kinematic error of the gear taken for all cycles during one revolution

(c) Mean value of the range of variation in permissible deviations in basic pitch of the gear taken for all cycles during one revolution

(d) Mean value of the range of variation in the angular error of the gear taken for all cycles during one revolution

The question was asked in an international level competition.

This question is from Sources of Errors in Manufacturing Gears in section Measurement and Testing of Gears of Engineering Metrology

Answer 1

Correct answer is (b) Mean value of the range of variation in the kinematic error of the gear taken for all cycles during one revolution

For explanation I would say: The cyclic error is defined as the mean value of the range of variation in the kinematic error of the gear which is taken for all cycles during 1 revolution. It can also be explained as an error which occurs during each revolution of the element under consideration.