Internal Combustion Engines
In a four stroke cycle engine, the sequence of operations is

Suction, expansion, compression and exhaust
Compression, expansion, suction and exhaust
Suction, compression, expansion and exhaust
Expansion, compression, suction and exhaust

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Internal Combustion Engines
A hydraulic ram is a device used to

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

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