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Internal Combustion Engines

Internal Combustion Engines
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.

Less
Same
More
None of these

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Internal Combustion Engines
The knock in diesel engine occurs due to

Delayed burning of the first part of the charge
Reduction of delay period
Instantaneous auto ignition of last part of charge
Instantaneous and rapid burning of the first part of the charge

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Internal Combustion Engines
Which of the following statement is correct regarding normal cetane?

It is a standard fuel used for knock rating of diesel engines
Its chemical name is normal hexadecane
All of these
It has long carbon chain structure

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

0.62569444444444
0.20902777777778
0.042361111111111
0.41736111111111

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Internal Combustion Engines
When crude oil is heated, then which of the following hydrocarbon is given off first?

Paraffin
Kerosene
Gasoline
Natural gas

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Internal Combustion Engines
The injection pressure in a diesel engine is about

100 bar
10 bar
500 bar
150 bar

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MORE MCQ ON Internal Combustion Engines

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