Technician A says universal joints allow the drive shaft to change angles in response to rear axle movements. Technician B says universal joints keep the drive shaft length constant as the drive shaft changes angles. 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 universal joints allow the drive shaft to change angles to accommodate the movement of the rear axle without affecting the power transmission. Technician B is incorrect because universal joints do not keep the drive shaft length constant; they allow for angular movement. The length adjustment is typically managed by a slip joint, not the universal joints.

Technician a Says Universal Joints Allow the Drive Shaft to Change