Correct answer
Allow gases produced inside to escape.
They let gases produced inside, especially during charging, escape and prevent dangerous accumulation. Do not block them with grease or dirt. They are not a means of correcting overfilling by spilling electrolyte. Follow the manufacturer’s instructions and keep flames, sparks and smoking away from the battery; sealed batteries have a different construction and must not be opened for topping up.
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Automatically spill any excess electrolyte.
Allow gases produced inside to escape.
Prevent any gas from escaping during charging.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
En una batería de plomo-ácido abierta con tapones provistos de respiraderos, ¿para qué sirven esos orificios?
- Impedir que salga cualquier gas durante la carga.
- Derramar automáticamente cualquier exceso de electrolito.
- Permitir la salida de los gases producidos en su interior.(Correct answer)
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