Find the pressure at point 2 given the isometric drawing of the commercial steel pipeline indicating the straight pipes length and with the following data below: Loss coefficients: • check valve, k = 5.0 • gate valves, k = 0.20 • elbows, k = 0.75 • flowmeter, k = 13.0 Pump flowrate = 10 m3/hr Fluid power adding by pump = 3.7 HP Pressure at point 1 = 60 kPag Pipe inside diameter = 50mm Viscosity = 0.17 Pa.s Specific gravity = 0.89 Pipe inside surface roughness = 0.00015 ft.

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Metrology of surface finish

In general terms, the application of scientific principles in the study of measurements is known as metrology. When speaking about measurement, it could be of time, length, microstructures, grain structures, internal crystal discontinuities, surface roughness, measurements of angles, height, width, and so on. While coming to the domain of mechanical engineering, metrology is considered the science of measurements of surface finish, length, surface texture, and angles.