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Internal Combustion Engines

Internal Combustion Engines
The cam shaft of a four stroke I.C. engine running at 1500 rpm will run at

3000 rpm
Any value independent of engine speed
1500 rpm
750 rpm

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Internal Combustion Engines
If the intake air temperature of I.C. engine increases, its efficiency will

Remain same
Decrease
None of these
Increase

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Internal Combustion Engines
Which of the following medium is compressed in a Diesel engine cylinder?

Air alone
Fuel alone
Air and fuel
Air and lub oil

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Internal Combustion Engines
In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then ___ is employed.

Fuel pump
Injector
Carburettor
None of the listed here

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Internal Combustion Engines
The term scavenging is generally associated with

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

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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
Detonation
Auto-ignition
Ignition delay

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