IC Engines MCQ - Page 3
IC Engines MCQ includes key topics like SI and CI engines, combustion, fuel systems, thermodynamic cycles, performance parameters, and emissions. These objective questions help students strengthen engine fundamentals for mechanical engineering and competitive exams.
Q41. What is the purpose of camshaft?
A. Control coolant
B. Open/close valves
C. Store fuel
D. Ignite fuel
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Q42. Governor mainly controls?
A. Speed
B. Temperature
C. Lubrication
D. Fuel grade
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Q43. Exhaust gas recirculation (EGR) reduces?
A. CO2
B. NOx
C. Smoke
D. CO
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Q44. The pollution from incomplete combustion is?
A. CO
B. CO2
C. O2
D. H2O
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Q45. Turbo lag occurs due to?
A. High speed
B. Delay in turbo boost
C. Low AFR
D. Rich mixture
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Q46. Air standard efficiency of otto cycle increases with?
A. Decreasing CR
B. Increasing CR
C. Increasing temperature
D. Lean mixture
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Q47. Which sensor detects crankshaft position?
A. MAP sensor
B. TPS
C. CKP sensor
D. O2 sensor
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Q48. BSFC stands for?
A. Brake specific fuel consumption
B. Basic specific fuel calculation
C. Brake system fuel control
D. Bearing specific fuel constant
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