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Internal Combustion Engines

Internal Combustion Engines
The self ignition temperature of petrol is _________ as compared to diesel oil.

Higher
Same
None of these
Lower

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Internal Combustion Engines
The fuels in order of decreasing knock tendency for spark ignition engines are

Napthene, paraffin, aromatic
Napthene, aromatics, paraffin
Paraffin, aromatic, napthene
Paraffin, napthene, aromatic

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Internal Combustion Engines
The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be

0.25
0.7
0.5
1

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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

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

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

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

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Internal Combustion Engines
The specific fuel consumption per B.P. hour for a petrol engine is about

0.2 kg
0.25 kg
0.3 kg
0.35 kg

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MORE MCQ ON Internal Combustion Engines

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