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Internal Combustion Engines

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

120
100
0
50

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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

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

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Internal Combustion Engines
The firing order in an I.C. engine depends upon

Number of cylinders
Arrangement of the cylinders
Design of crankshaft
All of these

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Internal Combustion Engines
Polymerization is a chemical process in which molecules of a compound become

Liquid
Smaller
Larger
Slowed down

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Internal Combustion Engines
Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided

Cannot work as it is impossible
Best quality fuel is used
It is properly designed
Flywheel size is proper

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Internal Combustion Engines
The actual volume of fresh charge admitted in 4-stroke petrol engine is

Equal to stroke volume
More than stroke volume
Less than stroke volume
Equal to stroke volume and clearance volume

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MORE MCQ ON Internal Combustion Engines

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