An automobile carburettor having its flost chamber vented to the atmosphere is tested. at sea level conditions in the factory without air cleaner. The main metering system of this carburettor is found to yield a fuel-air ratio of 0.065. The venturi throat pressure is 0.85 bar. The carburettor is now installed in an automobile and air cleaner is placed on the inlet to carburettor. The air flow rate with or without air filter is 230 kg/hr. The pressure drop through the filter is found to be 0.035 bar at sea level conditions. vesuming 7 and orifice coefficient to be constant calculate: The ventues throat pressure with air cleaner. (n) Air-fuel ratio with air cleaner.

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Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.