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Internal Combustion Engines

Internal Combustion Engines
A mixture containing 65% of iso-octane and 35% of normal heptane will have

Cetane number 35
Octane number 65
Cetane number 65
Octane number 35

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

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

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Internal Combustion Engines
In a four stroke cycle engine, the sequence of operations is

Suction, expansion, compression and exhaust
Expansion, compression, suction and exhaust
Compression, expansion, suction and exhaust
Suction, compression, expansion and exhaust

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Internal Combustion Engines
If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

Piston rings would stick into piston grooves
Exhaust will be smoky
Scavenging occurs
Engine starts overheating

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Internal Combustion Engines
The accumulation of carbon in a cylinder results in increase of

Clearance volume
Effective compression ratio
Ignition time
Volumetric efficiency

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Internal Combustion Engines
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

100
120
50

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MORE MCQ ON Internal Combustion Engines

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