Question:
The shaft which raises and lowers the inlet and exhaust valves at proper time is
The shaft which raises and lowers the inlet and exhaust valves at proper time is
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Camshaft = Controls "Breathing" (Valves). Crankshaft = Controls "Motion" (Pistons).
Updated On: May 5, 2026
- Connecting rod
- Crankshaft
- Camshaft
- Timing gear
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The Correct Option is C
Solution and Explanation
Step 1: Concept The valve timing mechanism controls the opening and closing of valves to allow air/fuel entry and exhaust gas exit.
Step 2: Meaning This requires a shaft with lobes (cams) that push against valve stems or rockers.
Step 3: Analysis The camshaft is driven by the crankshaft and has lobes positioned to actuate the valves in synchronization with the piston's position.
Step 4: Conclusion The camshaft is the component that operates the valves.
Final Answer: (C)
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