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Internal Combustion Engines

Internal Combustion Engines
Combustion in compression ignition engines is

Laminar
Heterogeneous
Homogeneous
Both (A) and (B)

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

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

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Internal Combustion Engines
Antiknock for compression ignition engines is

Napthene
Tetra ethyl lead
Hexadecane
Amyl nitrate

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Internal Combustion Engines
A 5 BHP engine running at full load would consume diesel of the order of

5 kg/hr
0.3 kg/hr
1 kg/hr
3 kg/hr

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Internal Combustion Engines
Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to

Overheated spark plug points
Cylinder walls being too hot
Any one of the listed here
Red hot carbon deposits on cylinder walls

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Internal Combustion Engines
The theoretically correct air fuel ratio for petrol engine is of the order of

0.25069444444444
0.62569444444444
0.50069444444444
0.37569444444444

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