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Internal Combustion Engines

Internal Combustion Engines
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

120
100
50

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Internal Combustion Engines
In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then ___ is employed.

Injector
Fuel pump
None of the listed here
Carburettor

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Internal Combustion Engines
In order to eliminate knocking in compression ignition engines, there should be

Late auto-ignition
Short delay period
High self ignition temperature of fuel
Low compression ratio

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

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Internal Combustion Engines
The scavenging efficiency of a four stroke cycle diesel engine is

Between 50 and 85%
Between 95 and 100%
Below 50%
Between 85 and 95%

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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.

None of the listed here
Greater than
Less than
Equal to

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MORE MCQ ON Internal Combustion Engines

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