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Internal Combustion Engines

Internal Combustion Engines
The ignition of the charge by some hot surface within the engine before the passage of spark is called

Ignition delay
Detonation
Auto-ignition
Pre-ignition

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Internal Combustion Engines
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of

1000°C
2000°C
250°C
500°C

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Internal Combustion Engines
The two reference fuels used for cetane rating are

Cetane and alpha-methyl naphthalene
Cetane and tetra ethyl lead
Cetane and iso-octane
Cetane and normal heptane

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Internal Combustion Engines
The term scavenging is generally associated with

2-stroke cycle engines
4-stroke cycle engines
High efficiency engines
Aeroplane engines

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Internal Combustion Engines
The fuels in order of decreasing knock tendency for spark ignition engines are

Paraffin, napthene, aromatic
Napthene, paraffin, aromatic
Napthene, aromatics, paraffin
Paraffin, aromatic, napthene

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Internal Combustion Engines
The specific fuel consumption per BH hour for a petrol engine is approximately

0.2 kg
0.25 kg
0.15 kg
0.3 kg

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MORE MCQ ON Internal Combustion Engines

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