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Internal Combustion Engines

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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Internal Combustion Engines
A diesel engine has

1 valve
3 valves
2 valves
4 valves

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Internal Combustion Engines
A carburettor is used to supply

Petrol and lubricating oil
Air and diesel
Petrol, air and lubricating oil
Petrol and air

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Internal Combustion Engines
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.

Same
Less
None of these
More

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Internal Combustion Engines
Which of the following is not an intern’s combustion engine?

2-stroke petrol engine
Diesel engine
4-stroke petrol engine
Steam turbine

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

Pre-ignition
Ignition delay
Auto-ignition
Detonation

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