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- Subject
- I.C. Enginesmechanical-engineering-mcqs › i-c-engines
- Published
- 27 Jan 2019
- Last updated
- 28 May 2026
Explanation
Viscosity increases with the SAE number in lubricating oils. Among the given choices, SAE 80 has the greatest viscosity, making it the thickest oil compared to SAE 30, 40, 50, and 70.
More I.C. Engines MCQs
Practice related questions from the same subject.
- 1.Where is the combustion chamber situated in an opposed piston diesel engine?
- 2.In a naturally aspirated diesel engine, what component delivers the air to the engine?
- 3.In the crankcase scavenging technique, what generates the air pressure required for the process?
- 4.In loop scavenging, how is the piston crown typically shaped?
- 5.What does a stoichiometric air-fuel ratio represent?
- 6.What component regulates the air-to-fuel mixture in petrol engines?
- 7.What does the pour point of fuel oil refer to?
- 8.What is the approximate air-to-fuel ratio in a petrol engine that yields the highest power output in vehicles?
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