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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
All of these
Low density
Low temperature

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Internal Combustion Engines
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere.

None of the listed here
Equal to
Less than
Greater than

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Internal Combustion Engines
The magneto in an automobile is basically

Capacitor
Transformer
D.C. generator
Magnetic circuit

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Internal Combustion Engines
In petrol engines, the delay period is of the order of

0.003 second
0.001 second
0.004 second
0.002 second

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Internal Combustion Engines
Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?

Yes
No
To some extent
Unpredictable

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Internal Combustion Engines
The effective inhibitor of pre-ignition is

Water
Lead
None of these
Alcohol

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