Correct answer
Air cooling and liquid-coolant cooling.
Air cooling and liquid-coolant cooling. In the first, air removes heat directly from engine surfaces; in the second, coolant carries it to a heat exchanger, usually a radiator transferring it to air. Pipes are circuit components rather than a separate second cooling category. This basic classification does not exclude oil also helping remove heat.
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Air and suction, as independent cooling systems.
Air cooling and liquid-coolant cooling.
Air and pipes, as independent systems.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
En la clasificación habitual de la refrigeración de un motor de combustión, ¿cuáles son los dos sistemas principales según el medio que extrae el calor?
- Por aire y por tuberías, como sistemas independientes.
- Por aire y por líquido refrigerante.(Correct answer)
- Por aire y por aspiración, como sistemas de refrigeración independientes.
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