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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 65
Cetane number 35
Octane number 65
Octane number 35

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Internal Combustion Engines
Polymerization is a chemical process in which molecules of a compound become

Larger
Liquid
Smaller
Slowed down

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Internal Combustion Engines
If the speed of the engine is increased, the indicated power will

Remain same
Decrease
Increase
None of these

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Internal Combustion Engines
The pressure at the end of compression in the case of diesel engine is of the order of

20 kg/cm
12 kg/cm
6 kg/cm
35 kg/cm

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Internal Combustion Engines
The object of providing masked inlet valve in the air passage of compression ignition engines is to

Induce secondary turbulence
Control air flow
Enhance flow rate
Induce primary swirl

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Internal Combustion Engines
A spark plug gap is kept from

0.6 to 1.0 mm
0.4 to 0.9 mm
0.3 to 0.7 mm
0.2 to 0.8 mm

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