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Internal Combustion Engines

Internal Combustion Engines
A diesel engine has

4 valves
3 valves
1 valve
2 valves

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Internal Combustion Engines
The spark ignition engines are governed by

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

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

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Internal Combustion Engines
High speed compression engines operate on

All of these
Dual combustion cycle
Diesel cycle
Otto cycle

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

ηm = I.P/B.P
None of these
ηm = B.P/I.P
ηm = (B.P × I.P)/100

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Internal Combustion Engines
A supercharged engine as compared to an ordinary engine

Is lighter
Requires smaller foundation
Consumes less lubricating oil
All of these

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MORE MCQ ON Internal Combustion Engines

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