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Internal Combustion Engines

Internal Combustion Engines
In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.

None of these
Below
Above
Equal to

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Internal Combustion Engines
A fuel of cetane number 40 has the same ignition quality as a mixture of

40% alpha methyl naphthalene and 60% cetane
40% diesel and 60% petrol
40% cetane and 60% alpha methyl naphthalene
40% petrol and 60% diesel

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Internal Combustion Engines
In a four stroke cycle petrol engine, the charge is ignited at

30° before top dead center
30° after top dead center
30° after bottom dead center
30° before bottom dead center

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Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

50
120
100

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Internal Combustion Engines
A diesel engine, during suction stroke, draws

Diesel only
A mixture of diesel and air
None of these
Air only

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Internal Combustion Engines
The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is

Same
Less
More or less depending on power rating
More

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MORE MCQ ON Internal Combustion Engines

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