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Internal Combustion Engines

Internal Combustion Engines
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have

Long ignition delay
Low density
All of these
Low temperature

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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

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

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Internal Combustion Engines
Scavenging is usually done to increase

Speed
Fuel consumption
Power output
Thermal efficiency

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

100
50
120

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Internal Combustion Engines
The air standard efficiency of an I.C. engine depends on

None of these
Compression ratio
Fuel used
Speed of engine

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Internal Combustion Engines
The mean effective pressure obtained from engine indicator indicates the

Maximum pressure developed
Average pressure
Instantaneous pressure at any instant
Minimum pressure

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MORE MCQ ON Internal Combustion Engines

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