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Internal Combustion Engines

Internal Combustion Engines
A supercharged engine as compared to an ordinary engine

Consumes less lubricating oil
Is lighter
All of these
Requires smaller foundation

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Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

120
100
50
0

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Internal Combustion Engines
The output of a diesel engine can be increased without increasing the engine revolution or size in following way

Heating incoming air
Supercharging
Feeding more fuel
Scavenging

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Internal Combustion Engines
Diesel as compared to petrol is

None of these
More difficult to ignite
Highly ignitable
Less difficult to ignite

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

Supercharging
Delay period
Carburetion
Turbulence

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Internal Combustion Engines
The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called

Volumetric efficiency
Mechanical efficiency
Indicated thermal efficiency
Overall efficiency

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MORE MCQ ON Internal Combustion Engines

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