ESENRU

Topic: Vehicle mechanics and maintenance · Nº 258 / 539

Question picture

¿Por qué los frenos de disco se calientan menos que los frenos de tambor?

Why do disc brakes heat up less than drum brakes?

  • APorque su superfície de fricción es mucho mayorBecause their friction surface is much larger
  • BPorque se encuentran muy ventiladosBecause they are very well ventilated
  • CPorque la frenada con éste freno es brusca y poco progresivaBecause braking with this brake is sudden and not very progressive
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Correct answer

  • BPorque se encuentran muy ventiladosBecause they are very well ventilated
Explanation

Disc brakes heat up less than drum brakes because they are better ventilated, while drum brakes have little ability to get rid of the heat produced by their friction.

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