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Consider the following statements relating to hydraulic gradient line and energy gradient line1. In the case of a fluid flowing in a pipeline, hydraulic

gradient line and energy gradient line may coincide.2. The line joining the points representing piezometric heads is known as hydraulic gradient line.3. In the case of ideal fluid, energy gradient line is always horizontal.4. Hydraulic gradient line has a downward slope in the case of flow through pipes.Of these statements :


Statement (1): hydraulic gradient line and energy gradient line "never" coincide because hydraulic grade line lies one velocity head below the the energy line. So, statement one is totally "wrong".
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