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Internal Combustion Engines

Internal Combustion Engines
If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be

0.04
0.14
0.02
0.08

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Internal Combustion Engines
The thermodynamic cycle on which the petrol engine works, is

Stirling cycle
Joule cycle
Otto cycle
Rankine cycle

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Internal Combustion Engines
As a result of detonation in an I.C. engine, following parameter attains very high value

Rate of rise of temperature
Peak temperature
Peak pressure
Rate of rise of pressure

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Internal Combustion Engines
Diesel as compared to petrol is

None of these
More difficult to ignite
Highly ignitable
Less difficult to ignite

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Internal Combustion Engines
An hmh flame speed is obtained in diesel engine when air fuel ratio is

About 35% of rich mixture
Uniform throughout the mixture
Chemically correct mixture
About 10% of rich mixture

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Internal Combustion Engines
If the temperature of intake air in internal combustion engine increases, then its efficiency will

Decrease
Increase
Remain same
None of the listed here

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MORE MCQ ON Internal Combustion Engines

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