Internal Combustion Engines
A hydraulic ram is a device used to

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
Store the energy of water
To lift water from deep wells

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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

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

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Internal Combustion Engines
The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the

The flow from the main jet is diverted to the compensating jet with increase in speed
Flow is produced due to the static head in the float chamber
Jet area is automatically varied depending on the suction
The diameter of the jet is constant and the discharge coefficient is invariant

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