Using the principle of a venturi-meter,explain the working of a carburetor and a spray pump.

(N/A) The carburetor of an automobile uses a venturi channel (nozzle) through which air flows at a high speed.
According to Bernoulli's principle,as the speed of air increases in the narrow neck of the venturi,the pressure decreases.
This low pressure at the narrow neck sucks petrol from the fuel chamber into the air stream,creating the correct air-fuel mixture necessary for combustion in the engine.
Devices like Bunsen burners,atomizers,perfume sprayers,and insecticide sprayers operate on the same principle.
In a spray pump,a piston forces air at high speed over the open end of a tube connected to a liquid container. This creates a region of low pressure at the top of the tube,causing the liquid to rise and be sprayed out along with the air stream.