Fluid Mechanics As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 Increases linearly with V None of these Decreases linearly with V Decreases as V² Increases linearly with V None of these Decreases linearly with V Decreases as V² ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 10³ VOM + 10.94 x 10⁶ V²OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is 24 mm/s 12 mm/s 28 mm/s 16 mm/s 24 mm/s 12 mm/s 28 mm/s 16 mm/s ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the Fluid velocity in the pipe Pipe length Time taken to close the valve All of these Fluid velocity in the pipe Pipe length Time taken to close the valve All of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A stream line is Fixed in space in steady flow Always the path of particle Drawn normal to the velocity vector at every point A line connecting the mid points of flow cross-section Fixed in space in steady flow Always the path of particle Drawn normal to the velocity vector at every point A line connecting the mid points of flow cross-section ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics N²Re/NFr is called the __________ number. Euler Galileo Brinkman Archimedes Euler Galileo Brinkman Archimedes ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the Distance between the throat and the inlet is more Sudden expansion of flow in the downstream occurs Length is shorter Throat diameter is more Distance between the throat and the inlet is more Sudden expansion of flow in the downstream occurs Length is shorter Throat diameter is more ANSWER DOWNLOAD EXAMIANS APP
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