What is the function of a car’s radiator?
? A) ?To heat the interior of the car
? B) ?To cool the engine
? C) ?To filter the air
? D) ?To store fuel
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The correct answer and explanation is:
The correct answer is: B) To cool the engine.
Explanation:
A car’s radiator is a crucial component of the vehicle’s cooling system, which helps regulate the engine’s temperature to prevent overheating. Internal combustion engines generate a significant amount of heat during operation due to the burning of fuel and friction between moving parts. If this heat is not managed effectively, it can cause severe damage to the engine, including warping of components or even complete engine failure.
The radiator works by transferring heat away from the engine. Here’s how it functions:
- Circulation of Coolant: A mixture of water and antifreeze (coolant) circulates through the engine, absorbing heat as it flows through the engine block and cylinder head.
- Heat Dissipation: The heated coolant then travels to the radiator, where it is cooled. The radiator consists of a series of thin metal fins and tubes, which increase the surface area for heat exchange.
- Airflow Assistance: As the car moves, air flows through the radiator, helping to dissipate the heat from the coolant. Additionally, a fan may provide extra airflow when the car is stationary or moving slowly.
- Return to Engine: Once the coolant is cooled, it is pumped back into the engine to repeat the process.
The radiator plays a vital role in maintaining the engine’s optimal operating temperature, typically between 195°F and 220°F (90°C to 105°C). If the radiator or cooling system fails, the engine can overheat, leading to potential damage such as cracked cylinder heads, blown gaskets, or seized pistons.
By efficiently removing heat, the radiator ensures the engine runs smoothly and efficiently, prolonging its lifespan and maintaining performance. Regular maintenance, such as checking coolant levels and cleaning the radiator, is essential to keep the cooling system functioning properly.