Viscosity and Coefficient of Viscosity

What is viscosity?

• A measurement of a fluid's resistance to flow or change in shape

• The force required to maintain a unit velocity gradient between two parallel layers of liquid

• The difference in velocity between the fluid's adjacent layers

• The ratio of shearing stress to the velocity gradient of the fluid

Which liquid will drain more slowly through a cup with a hole in the bottom?

• Water

• Honey

• Glycerin

• All liquids drain at the same speed

What does viscosity depend on?

• Fluid temperature, deformation rate, and pressure

• Fluid temperature and deformation rate

• Fluid temperature and pressure

• Deformation rate and pressure

What is the coefficient of viscosity?

• The force required to maintain a unit velocity gradient between two parallel layers of liquid of a unit area

• The difference in velocity between the fluid's adjacent layers

• The ratio of shearing stress to the velocity gradient of the fluid

• The distinction inside the velocity among the fluid's adjacent layers

What is the viscous gradient?

• The difference in velocity between the fluid's adjacent layers

• The force required to maintain a unit velocity gradient between two parallel layers of liquid of a unit area

• The ratio of shearing stress to the velocity gradient of the fluid

• The distinction inside the velocity among the fluid's adjacent layers

Which type of fluid flows easily due to its molecular makeup resulting in little or no friction?

• High-viscosity fluid

• Low-viscosity fluid

• Newtonian fluid

• Gases

What is the measurement of a fluid's resistance to flow or change in shape at a given rate?

• Viscous gradient

• Coefficient of viscosity

• Deformation rate

• Viscosity

What is the force multiplied by a time divided by an area?

• Viscosity

• Coefficient of viscosity

• Viscous gradient

• Deformation rate

Which factor does the viscosity of a Newtonian fluid not vary with?

• Fluid temperature

• Deformation rate

• Pressure

• None of the above

What role does the coefficient of viscosity play in various applications?

• Determining the difference in velocity between the fluid's adjacent layers

• Measuring the force required to maintain a unit velocity gradient between two parallel layers of liquid

• Describing the internal friction of a fluid that is moving

• Determining how easily or difficult a fluid flows under the effect of external forces