The loss of head in pipe due to friction is calculated by-
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A.
Darcy's law
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B.
Darcy–Weisbach equation
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C.
Energy loss
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D.
Chezy's law
Correct Answer:
B. Darcy–Weisbach equation
Explanation:
The Darcy-Weisbach equation is the standard formula used to calculate the head loss or energy loss caused by friction as a fluid moves through a pipe. It relates this loss to the pipe's length and diameter, the fluid's velocity, and a friction factor determined by the flow regime and pipe roughness. While Chezy's law also addresses fluid flow, it is primarily used to determine the mean velocity in open channels. Therefore, the Darcy-Weisbach equation is the most accurate and widely accepted method for calculating frictional head loss in piping systems.
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