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Internal Combustion Engines

Internal Combustion Engines
The ignition quality of petrol is expressed by

All of these
Octane number
Calorific value
Cetane number

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Internal Combustion Engines
In loop scavenging, the top of the piston is

Contoured
Flat
Slanted
Depressed

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Internal Combustion Engines
Antiknock for compression ignition engines is

Amyl nitrate
Tetra ethyl lead
Hexadecane
Napthene

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Internal Combustion Engines
A petrol engine, during suction stroke draws

None of these
Petrol only
A mixture of petrol and air
Air only

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Internal Combustion Engines
The thermal efficiency of diesel engines on weak mixtures is

Dependent on other factors
Higher
Unaffected
Lower

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Internal Combustion Engines
The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be

Higher
None of the listed here
Remain unaffected
Lower

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