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Internal Combustion Engines

Internal Combustion Engines
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of

250°C
1000°C
2000°C
500°C

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

0
120
50
100

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Internal Combustion Engines
The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

Relative efficiency
Efficiency ratio
Net efficiency
Overall efficiency

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

None of the listed here
ηm = B.P/I.P
ηm = I.P/B.P
ηm = (B.P × I.P)/100

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Internal Combustion Engines
A 75 cc engine has following parameter as 75 cc

Cylinder volume
Swept volume
Fuel tank capacity
Lube oil capacity

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Internal Combustion Engines
The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is

More or less depending on power rating
More
Same
Less

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MORE MCQ ON Internal Combustion Engines

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