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Internal Combustion Engines

Internal Combustion Engines
Air fuel ratio for idling speed of a petrol engine is approximately

0.20902777777778
0.042361111111111
0.41736111111111
0.62569444444444

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Internal Combustion Engines
Which is more viscous lube oil?

SAE 50
SAE 70
SAE 80
SEA 30

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Internal Combustion Engines
A petrol engine has compression ratio from

15 to 25
10 to 15
6 to 10
25 to 40

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Internal Combustion Engines
Stoichiometric ratio is

Actual air-fuel ratio for maximum efficiency
Chemically correct air-fuel ratio by weight
Chemically correct air-fuel ratio by volume
None of these

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Internal Combustion Engines
The pressure inside the cylinder is _________ the atmospheric pressure during the exhaust stroke.

None of these
Below
Above
Equal to

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Internal Combustion Engines
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

Kinematic similarity
Geometric similarity
Dynamic similarity
None of these

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