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Internal Combustion Engines

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

0
50
120
100

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Internal Combustion Engines
The air standard efficiency of an I.C. engine depends on

Fuel used
Compression ratio
None of these
Speed of engine

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Internal Combustion Engines
The self ignition temperature of petrol is _________ as compared to diesel oil.

Higher
Same
None of these
Lower

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Internal Combustion Engines
Which is more viscous lube oil?

SAE 70
SAE 80
SAE 50
SEA 30

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Internal Combustion Engines
The fuel in diesel engine is normally injected at pressure of

20-25 kg/cm²
60-80 kg/cm²
90-130 kg/cm²
5-10 kg/cm²

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Internal Combustion Engines
In petrol engines, the delay period is of the order of

0.001 second
0.003 second
0.002 second
0.004 second

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