040307
Practice
Mock
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Transmission
Clutch, gearbox, driveshafts, differentials, 4WD.
Q 1 / 50
transmission
L1
Why is a differential needed in the driven axle of a road car?
A
To allow the engine to run at idle while the driven wheels remain stationary without dragging the gearbox input shaft round
B
To convert the alternator AC output to the DC voltage needed by the body control module on the driven axle
C
To allow the two driven wheels to rotate at different speeds during cornering while still receiving drive torque
D
To pressurise the brake hydraulic fluid before it reaches the master cylinder so the driven axle gets servo assistance
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