Transmission & Drivetrain (A2/A3)Question 22 of 120
The differential in a rear axle allows:
a.The driveshaft to change length
b.The transmission to shift gears
c.The drive wheels to rotate at different speeds during turns
d.The engine to idle smoothly
Explanation
The differential splits torque to the drive wheels while allowing them to turn at different speeds when cornering, since the outer wheel travels farther. A limited-slip design adds resistance to reduce wheel spin. Whining or howling noises often indicate worn or improperly set-up gears.
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