Internal Combustion Engines
Fuel oil consumption guarantees for I .C. engine are usually based on

Net calorific value of oil
Low heat value of oil
Calorific value of fuel
High heat value of oil

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by

(V₀/V₁)/ [1 + (V₀/V₁)²]
V₁/(V₀ + V₁)
V₀/(V₀ + V₁)
[2(V₀/V₁)]/ [1 + (V₀/V₁)²]

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Internal Combustion Engines
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?

Inlet valve closing after bottom dead center
Inlet valve opening before top dead center
Inlet valve closing before bottom dead center
Exhaust valve closing after top dead center

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