Internal Combustion Engines
In a coil ignition system of petrol engines, a condenser is connected across the contact breaker in order to

Cause more rapid break of the primary current, giving a higher voltage in the secondary circuit
None of these
Prevent sparking across the gap between the points
Both (A) and (B)

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Internal Combustion Engines
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to

Ensure that penetration is not high
All of these
Inject fuel in a chamber of high pressure at the end of compression stroke
Inject fuel at a high velocity to facilitate atomization

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Internal Combustion Engines
Supercharging is the process of

Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
Injecting excess fuel for raising more loads
Supplying compressed air to remove combustion products fully
Providing forced cooling air

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