Internal Combustion Engines
In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as

Scavenging
Detonation
Polymerisation
Supercharging

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Internal Combustion Engines
A hydraulic ram is a device used to

To lift water from deep wells
Store the energy of water
To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height
Increase the pressure of water

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