Step 3 » GENERAL learning environment Category B (B, B1)

For answer  A 

If the drum becomes ovalized, the wheels will not lock, but the braking will be irregular. When pressing the brake pedal, the driver will feel vibrations, and the braking efficiency will be reduced. In addition, this defect can lead to uneven wear of the braking system components.

For answer  B 

The seizing of the bearings can cause the blocking of a wheel during driving, affecting the stability and maneuverability of the motor vehicle. This phenomenon can occur due to the lack of lubrication or the deterioration of the bearings and requires immediate inspection to avoid damaging other components.

For answer  C 

If the brake shoes are excessively worn, the braking efficiency will be considerably reduced, increasing the stopping distance and affecting traffic safety. However, the excessive wear of the brake shoes will not lead to the blocking of the wheels, but only to less effective braking, requiring stronger pressing of the brake pedal to obtain the desired effect.

The correct answer is: B

Recommendations:

Mechanics course (knowledge of the main elements) --> Mechanics course