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To maintain the coolant at a higher pressure than the atmosphere ______ are provided in the Radiator.

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To maintain the coolant at a higher pressure than the atmosphere ______ are provided in the Radiator.

(a) fins

(b) radiator cap

(c) blow-off valve

(d) overflow pipe

The question was asked in an interview for internship.

This interesting question is from Components of Water Cooling System in division Cooling System of Automotive Engine Design

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The correct answer is (b) radiator cap

For explanation: The pressure cap forms an airtight joint due to which the coolant is maintained at some higher pressure than the atmosphere due to which the boiling point of the coolant is raised.

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