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Internal Combustion Engines

Internal Combustion Engines
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.

More
Less
Same
None of these

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Internal Combustion Engines
The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called

Indicated thermal efficiency
Overall efficiency
Volumetric efficiency
Mechanical efficiency

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Internal Combustion Engines
A fuel of cetane number 40 has the same ignition quality as a mixture of

40% cetane and 60% alpha methyl naphthalene
40% alpha methyl naphthalene and 60% cetane
40% diesel and 60% petrol
40% petrol and 60% diesel

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Internal Combustion Engines
Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.

Double
Four times
Half
Same

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Internal Combustion Engines
Which is more viscous lube oil?

SAE 80
SAE 70
SEA 30
SAE 50

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Internal Combustion Engines
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows

Avoidance of overloading
Using additives in the fuel
Adherence to proper fuel specification
Increasing the compression ratio

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