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Internal Combustion Engines

Internal Combustion Engines
Diesel as compared to petrol is

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

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Internal Combustion Engines
Which of the following is false statement?Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following

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
In petrol engines, the delay period is of the order of

0.002 second
0.001 second
0.003 second
0.004 second

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Internal Combustion Engines
In loop scavenging, the top of the piston is

Depressed
Contoured
Flat
Slanted

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

V₁ / (V₀ + V₁)
V₀ / (V₀ + V₁)
2V₀ / (V₀ + V₁)
2V₁ / (V₀ + V₁)

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Internal Combustion Engines
The inlet valve of a four stroke cycle internal combustion engine remains open for

180°
230°
270°
130°

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