describe the working mechanism of a common hand pump
Answers
Explanation:
Handpumps operate on the principles of fluid mechanics. Mechanical energy is used to lift the water from some depth below ground to the surface, and the water is moved by taking advantage of pressure differences. The fluid moves from an area of higher pressure to lower pressure when the piston is moved up and down.
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Answer:
Working: The working of a water pump has two strokes: up stroke and down stroke.
Explanation:
Up stroke: When the handle of water pump is pushed down the piston is moved upward. called up stroke. During the up stroke the pressure in the barrel below the piston is reduced. The piston valve V₁ is closed due to the greater pressure of the water from the top. The pressure in the in the barrel lower the piston is reduced and foot valve V; opens. Some water enters into the barrel as the piston is moved up. From the water reservoir.
Down stroke: When the handle of a water pump is lifted up piston moves down. It is called down stroke. During the down stroke the pressure in the barrel below the piston becomes greater than the pressure above the piston. As a result, the piston valve V, is opened and the foot valve V₂ is closed. As the piston moves down, the water collected in the barrel below the piston moves up into the barrel above the piston. In the next up stroke the water comes out of the outlet while the previous process in the barrel is repeated hole
