The cardan shafts transmit the power from the gearbox to the drive axle and must be balanced to prevent vibrations. If they are unbalanced due to wear, impacts or incorrect installation, a mass imbalance appears which generates strong vibrations while driving, intensifying as the speed increases. These vibrations can affect both comfort and the transmission and suspension components, being one of the most frequent causes of strong vibrations in trucks.
The correct answer is: C
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