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Internal Combustion Engines

Internal Combustion Engines
The pressure at the end of compression, in diesel engines, is approximately

20 bar
35 bar
10 bar
25 bar

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Internal Combustion Engines
The increase of efficiency of a compression ignition engine, as the load decreases, is due to

Hit and miss governing
Quantitative governing
Higher maximum temperature
Qualitative governing

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Internal Combustion Engines
The firing order in an I.C. engine depends upon

All of these
Arrangement of the cylinders
Number of cylinders
Design of crankshaft

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Internal Combustion Engines
If the compression ratio in I.C. engine increases, then its thermal efficiency will

Decrease
Increase
None of these
Remain same

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

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

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Internal Combustion Engines
The mean effective pressure obtained from engine indicator indicates the

Instantaneous pressure at any instant
Average pressure
Maximum pressure developed
Minimum pressure

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