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Internal Combustion Engines

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

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

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

2V₀ / (V₀ + V₁)
2V₁ / (V₀ + V₁)
V₀ / (V₀ + V₁)
V₁ / (V₀ + V₁)

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Internal Combustion Engines
Diesel as compared to petrol is

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

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Internal Combustion Engines
In diesel engine, the compression ratio in comparison to expansion ratio is

Same
Variable
More
Less

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

20 : 1 and less
0.41736111111111
0.62569444444444
0.33402777777778

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Internal Combustion Engines
The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.

Increase
Not effect
Reduce
None of these

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MORE MCQ ON Internal Combustion Engines

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