Technician A says the speeds at which two meshed gears turn depend on the number of teeth on each gear. Technician B says if the driving gear has fewer teeth than the driven gear, the speed of the driven gear increases. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because the speed ratio between two meshed gears is determined by the ratio of their teeth counts. Technician B is incorrect because if the driving gear has fewer teeth than the driven gear, the speed of the driven gear decreases, not increases.

Technician a Says the Speeds at Which Two Meshed Gears