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Internal Combustion Engines

Internal Combustion Engines
A heat engine utilizes the

Mean heat value of oil
Low heat value of
Calorific value of oil
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 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
Supercharging is essential in

Diesel engines
Aircraft engines
Gas turbines
Petrol engines

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Internal Combustion Engines
In loop scavenging, the top of the piston is

Contoured
Depressed
Slanted
Flat

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Internal Combustion Engines
The following volume of air is required for consuming 1 liter of fuel by a four stroke engine

56 m3
1 m3
5 m3
910 m3

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Internal Combustion Engines
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows

Increasing the compression ratio
Avoidance of overloading
Using additives in the fuel
Adherence to proper fuel specification

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