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Internal Combustion Engines

Internal Combustion Engines
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of

2000°C
500°C
250°C
1000°C

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Internal Combustion Engines
The ignition quality of diesel oil is expressed by

None of the listed here
Octane number
Cetane number
Calorific value

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Internal Combustion Engines
Which of the following is false statement?Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following

Detonation
Oil sludge in the engine crank case
Piston ring and cylinder wear
Formation of hard coating on piston skirts

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

0
100
50
120

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Internal Combustion Engines
A petrol engine has compression ratio from

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

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Internal Combustion Engines
The spark ignition engines are governed by

Combination of (B) and (C)
Quantitative governing
Qualitative governing
Hit and miss governing

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