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Internal Combustion Engines

Internal Combustion Engines
A mixture containing 65% of iso-octane and 35% of normal heptane will have

Cetane number 35
Cetane number 65
Octane number 35
Octane number 65

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Internal Combustion Engines
For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of

0.37569444444444
0.75069444444444
0.62569444444444
0.50069444444444

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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

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

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Internal Combustion Engines
The size of inlet valve of an engine in comparison to exhaust valve is

Same
Less
More/less depending on capacity of engine
More

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Internal Combustion Engines
The normal heptane (C₇H₁₆) is given a rating of ________ octane number.

120
50
100

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

Cetane number
None of the listed here
Octane number
Calorific value

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MORE MCQ ON Internal Combustion Engines

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