Fluid-mechanics Questions Set 50:
The density of a fluid is 13,600 kg/m³. What is its specific gravity?
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A stone weighs 500 N in air and 350 N in water. What is the volume of the stone?
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Which of the following statements about turbulent flows (internal flow) are correct?
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If the error in measuring the head over the apex of a triangular notch (H) is 3%, what is the percentage error in the discharge over the triangular notch?
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A beaker is filled with a liquid up to the 1-litre mark and weighed. The weight of the liquid is found to be 6.5 N. The specific weight of the liquid will be:
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If a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is p, then the maximum shear stress developed inside the cube is
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In a De-Laval nozzle, what is the pressure at the minimum cross-section (i.e., pressure at the throat, p2) when expanding superheated steam from 12 bar to 0.2 bar?
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Consider an incompressible fluid flowing over a flat plate with zero pressure gradient. The value of the laminar boundary layer thickness at Re = 1000 is 1 mm. When the velocity is increased 4 times, find the boundary layer thickness at the same location (in mm, Re = Reynolds number).
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What is the mechanical efficiency of an impulse turbine?
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Boundary layer formation occurs on a flat plate due to airflow (consider it viscous laminar flow). The plate's length is "L," and the boundary layer thickness at the end is "δL". What is the percentage change in boundary layer thickness at the end when the length of the plate is increased to "2*L"?
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