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Automobile Engineering in ME

Automobile Engineering in ME
In Diesel engines, the duration between the time of injection and the time of ignition is called

Delay period
Spill cut-off
Injection period
Ignition period

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Automobile Engineering in ME
If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on

Too lean mixture
Most economical mixture
Too rich mixture
Stoichiometric mixture

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Automobile Engineering in ME
In a petrol engine, the high voltage for spark plug is in the order of

1000 volts
11 kilovolts
22 kilovolts
2000 volts

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Automobile Engineering in ME
The most effective method of controlling S.I. engine exhaust emission is by

Using catalytic converter
Recirculating exhaust
None of these
Using some additives in the fuel

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Automobile Engineering in ME
The purpose of a thermostat in an engine cooling system is to

Indicate the coolant temperature
Prevent the coolant from boiling
Pressurise the system to raise the boiling point
Allow the engine to warm up quickly

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Automobile Engineering in ME
In a Diesel engine, the function of a fuel injector is to

Provide flame front for ignition
Mix the fuel and air
Spray atomized fuel in the cylinder
Ignite the air-fuel mixture

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