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Internal Combustion Engines

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

50
100
0
120

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Internal Combustion Engines
Which of the following is false statement?

Piston ring and cylinder wear
Detonation
Oil sludge in the engine crank case
Formation of hard coating on piston skirts

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Internal Combustion Engines
The maximum propulsive efficiency of a turbojet engine is at a speed of

2000 km/h
2400 km/h
3000 km/h
1000 km/h

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Internal Combustion Engines
The cam shaft of a four stroke I.C. engine running at 1500 rpm will run at

Any value independent of engine speed
750 rpm
1500 rpm
3000 rpm

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Internal Combustion Engines
The fuel in diesel engine is normally injected at pressure of

90-130 kg/cm²
5-10 kg/cm²
60-80 kg/cm²
20-25 kg/cm²

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Internal Combustion Engines
A spark plug gap is kept from

0.4 to 0.9 mm
0.6 to 1.0 mm
0.3 to 0.7 mm
0.2 to 0.8 mm

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