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Internal Combustion Engines

Internal Combustion Engines
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.

Not effected
Increase
Decrease
None of these

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Internal Combustion Engines
The compression ignition engines are governed by

Hit and miss governing
Quantitative governing
Qualitative governing
Combination of (B) and (C)

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

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

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

100
50
120

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Internal Combustion Engines
The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will

May increase or decrease depending on other factors
Decrease
Be independent
Increase

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Internal Combustion Engines
A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of

75% petrol and 25% diesel
75% normal heptane and 25% iso-octane
75% iso-octane and 25% normal heptane
75% diesel and 25% petrol

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MORE MCQ ON Internal Combustion Engines

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