Viscosity and Coefficient of Viscosity

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Viscosity and Coefficient of Viscosity: Overview

This topic covers concepts such as Viscosity of Fluids, Viscous Force, Factors Affecting Viscous Force, Contact-Area of the layers, Velocity Gradient between Layers, Coefficient of Viscosity, SI Unit of Coefficient of Viscosity, Poise, etc.

Important Questions on Viscosity and Coefficient of Viscosity

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What is the difference between viscosity and coefficient of viscosity?

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What happens to the coefficient of viscosity if the temperature increases?

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The kinematic viscosity of a fluid is 0.1 strokes, what will be the value is m2sec?

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Which of the following is a dimension of dynamic viscosity?

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Which one of the following is not a unit of dynamic viscosity?

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The viscosity of a fluid in motion is 1 poise. What will be its viscosity ( in poise) when the fluid is at rest?

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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 fluid in contact with the upper plate?

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The dependence of the flow stress on the strain rate is _________.

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Increasing the strain rate ________ the flow stress.

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The compare the elongation to from different sized specimen, the geometrical shape factor is taken into consideration. For a cylindrical specimen, the geometrical shape factor will ____ (where L is the length D is the diameter)

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For an extremely ductile metal the true fracture strain calculated from the reduction in the area of the specimen the and the elongation in the length of the sample will have different values.

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The fluid that doesn't follow Newton's law of viscosity is called as_____.

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Why two holes are made to empty an oil tin?

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A steel ball is dropped in a viscous liquid. The distance of the steel ball from the top of the liquid is shown below. The terminal velocity of the ball is closest to

 

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What is the dimensional formula for the ratio of force to viscosity?

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What would be the dimensional formula of viscosity if the dimensional formula of area is ML2T2?

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Derive the dimensions of viscosity.

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The dimensions of viscosity are

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The fluid that doesn't follow Newton's law of viscosity is called as_____ fluid.