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Internal Combustion Engines

Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

100
0
120
50

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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

Geometric similarity
None of these
Dynamic similarity
Kinematic similarity

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Internal Combustion Engines
The effective inhibitor of pre-ignition is

Alcohol
Water
Lead
None of these

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Internal Combustion Engines
The reflectivity depends upon

All of these
Energy of neutrons
Geometry of the reflector
Properties of the reflector

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Internal Combustion Engines
Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided

Best quality fuel is used
Cannot work as it is impossible
It is properly designed
Flywheel size is proper

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Internal Combustion Engines
A petrol engine has compression ratio from

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

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