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Topic: Vehicle mechanics and maintenance · Nº 206 / 539

Question picture

¿Cuál es la función principal de la batería del vehículo?

What is the main job of the vehicle's battery?

  • ADar energía al sistema eléctrico cuando el vehículo está encendido.To power the electrical system when the vehicle is switched on.
  • BProporcionar energía al sistema eléctrico cuando el motor está apagado y permitir el arranque.To power the electrical system when the engine is off and to allow the engine to start.
  • CGenerar energía eléctrica de forma continua durante la circulación.To produce electricity continuously while driving.
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Correct answer

  • BProporcionar energía al sistema eléctrico cuando el motor está apagado y permitir el arranque.To power the electrical system when the engine is off and to allow the engine to start.
Explanation

The battery powers the electrical system when the engine is off and allows the engine to be started by the starter motor. Once the engine is running, the electricity needed for the vehicle's systems (lights, radio, climate control, etc.) is supplied mainly by the alternator, which also recharges the battery so that it is ready for the next start. That is why the answer about powering the electrical system when the vehicle is switched on is wrong: when the engine is running, the battery is not the main source of power, but acts as a reserve and back-up when extra power is needed.

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