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Internal Combustion Engines

Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

120
0
100
50

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Internal Combustion Engines
The object of providing masked inlet valve in the air passage of compression ignition engines is to

Enhance flow rate
Induce primary swirl
Control air flow
Induce secondary turbulence

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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
Mechanical efficiency
Volumetric 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
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere.

Less than
Greater than
None of the listed here
Equal to

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Internal Combustion Engines
The power actually developed by the engine cylinder of an I.C. engine is known as

None of the listed here
Theoretical power
Indicated power
Actual power

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