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Internal Combustion Engines

Internal Combustion Engines
Which of the following is not an intern’s combustion engine?

2-stroke petrol engine
Diesel engine
4-stroke petrol engine
Steam turbine

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Internal Combustion Engines
The reference fuels for knock rating of spark ignition engines would include

Normal octane and aniline
Iso-octane and normal hexane
Normal heptane and iso-octane
Iso-octane and alpha-methyl naphthalene

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Internal Combustion Engines
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as

Centre of buoyancy
Centre of pressure
Centre of gravity
Metacentre

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

Equal to
Above
None of these
Below

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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

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

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Internal Combustion Engines
The air-fuel ratio in petrol engines is controlled by

Controlling valve opening/closing
Injection
Carburetion
Governing

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MORE MCQ ON Internal Combustion Engines

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