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When valves are closed which pressure is built inside the cylinder?(a) Neutral pressure(b) Positive pressure(c) Negative pressure(d) Zero pressureI got this question in an interview.This intriguing question comes from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design

Answer»

The correct ANSWER is (c) Negative pressure

For explanation: The PURPOSE of the VALVE SPRING is to EXERT force on the rocker arm and When valves are closed negative pressure is built inside the engine cylinder.



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