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The opening and closing of a valve is respectively done by

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in Automobile Engineering by (80.5k points)
The opening and closing of a valve is respectively done by

(a) A cam and a spring

(b) A spring and a cam

(c) Gas pressure and cam

(d) Cylinder vacuum and spring

I got this question in an online quiz.

This intriguing question originated from Engine Valves and their Mechanisms in section Internal Combustion Engines of Automobile Engineering

1 Answer

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Best answer
Right answer is (a) A cam and a spring

To elaborate: An engine valve is opened by a cam and closed by a spring.

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