Two horizontal plates placed 250mm apart have an oil of viscosity 20 poises. Calculate the shear stress in oil if upper plate is moved with velocity of 1250mm/s.
The kinematic viscosity of oil of specific gravity .8 is .0005. This oil is used for lubrication of shafts diameter of .4 m and rotates at 190 rpm. Calculate the power lost in the bearing for a sleeve length of 90mm. The thickness of the oil film is 1.5mm.
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Find the kinematic viscosity of oil having density 1962 kg/m3. The force experienced for area of 20 m2 is 4.904 kN and velocity of gradient at that point is 0.2/s.
The velocity distribution for fluid flow over a flat plate is given by u=2y-6y2 in which u is the velocity in metre per second at a distance of y metre above the plate. Determine the shear stress at y=0.15m.Take dynamic viscosity of fluid as 8.6 poise.
In which types of fluids it is observed that momentum transfer dominates cohesive forces with increase in temperature and hence viscosity increases
What is the characteristic variation shown by the thixotropic fluids in their shear stress vs. rate of shear strain graph?
What happens to viscosity in the case of incompressible fluids as temperature is increased?
If a fluid, which has a constant specific gravity, is taken to a planet where acceleration due to gravity is 3 times compared to its value on earth, what will happen to its kinematic viscosity.
In liquids in order to measure the viscosity of fluid experimentally we consider the variation of shear stress with respect to what property?
For a compressible fluid the kinematic viscosity is affected by temperature and pressure variation.
56 videos|104 docs|75 tests
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56 videos|104 docs|75 tests
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