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Internal Combustion Engines

Internal Combustion Engines
The pressure inside the cylinder is _________ the atmospheric pressure during the exhaust stroke.

Equal to
None of these
Above
Below

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Internal Combustion Engines
Air fuel ratio at which a petrol engine cannot work is

0.62569444444444
0.41736111111111
0.33402777777778
20 : 1 and less

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Internal Combustion Engines
A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of

75% petrol and 25% diesel
75% iso-octane and 25% normal heptane
75% diesel and 25% petrol
75% normal heptane and 25% iso-octane

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Internal Combustion Engines
The operation of forcing additional air under pressure into the engine cylinder is known as

Delay period
Carburetion
Turbulence
Supercharging

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Internal Combustion Engines
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere.

Greater than
Less than
Equal to
None of the listed here

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Internal Combustion Engines
If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

Scavenging occurs
Piston rings would stick into piston grooves
Exhaust will be smoky
Engine starts overheating

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