Technician A says when an external gear drives another external gear, the output gear will rotate in the opposite direction to the input gear. Technician B says when an external gear drives another external gear, the output gear will rotate in the same direction as the input gear. 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. When two external gears mesh, the output gear will always rotate in the opposite direction to the input gear. This is because the teeth on the gears are angled in a way that causes the contact point between them to move in the opposite direction as the input gear. Technician B is incorrect in this case.

Technician a Says When an External Gear Drives Another External