The dynamic viscosity of a fluid is 1 Poise. What should one multiply to it to get the answer in N-s/m^2?

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The kinematic viscosity of oil of specific gravity .8 is .0005 .This oil is used for lubrication of shaft of diameter .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.

asked Jan 30, 2022 in Fluid Mechanics by Charlotte (118k points)

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Find the kinematic viscosity of oil having density 1962 g/m3. the force experienced for area of 20 m2 is 4.904 kN and velocity of gradient at that point is 0.2/s.

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Which of the following is a unit of dynamic viscosity?

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Water flows between two plates of which the upper one is stationary and the lower one is moving with a velocity V. What will be the velocity of the fluid in contact with the upper plate?

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What happens to viscosity in the case of incompressible fluids as temperature is increased?

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asked Jan 30, 2022 in Fluid Mechanics by Charlotte (118k points)

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Which of the following is the dimension of kinematic viscosity?

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Determine the compressibility of an incompressible fluid, if the pressure of the fluid is changed from 70 N/m^2 to 130 N/m^2. The volume of the liquid changes by 0.15 percent.

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What is the characteristic variation shown by the thixotropic fluids in their shear stress vs. rate of shear strain graph?

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The surface tension of fluid in contact with air at 25℃ is 0.51N/m. The pressure inside a droplet is to be 0.05 N/cm2 greater than outside pressure. Determine the diameter of the droplet of water.

asked Jan 30, 2022 in Fluid Mechanics by Charlotte (118k points)

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Which of the following correctly states how the viscosities of a liquid and a gas will change with temperature?

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A water drop of diameter 1 cm breaks into 1000 similar droplets of same diameter. What will be the gain or loss in the surface energy? (Take surface tension as 0.075 N/m)

asked Jan 30, 2022 in Fluid Mechanics by Charlotte (118k points)

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