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

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

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Internal Combustion Engines
Compression ratio of I.C. Engines is

Ratio of pressure after compression and before compression
The ratio of volumes of air in cylinder before compression stroke and after compression stroke
Volume displaced by piston per stroke and clearance volume in cylinder
Swept volume/cylinder volume

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