Practice question

What is the function of the differential in a heavy commercial vehicle's drive axle?

To allow the left and right drive wheels to rotate at different speeds when cornering while transmitting power to both
To increase the top speed of the vehicle on highways
To stop the vehicle when the brakes fail
To cool the engine coolant as it passes through the axle

Answer: A — To allow the left and right drive wheels to rotate at different speeds when cornering while transmitting power to both

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