Understanding Fluid Viscosity

What is the primary factor that causes shear stress between fluid layers?

• Chemical composition differences

• Relative velocity differences

• Pressure differences

• Temperature differences

Which law describes the linear relationship between shear stress and velocity gradient in fluids?

• Pascal's Law

• Hooke's Law

• Newton's Law of Viscosity

• Bernoulli's Principle

What is the unit of dynamic viscosity?

• Pascal-seconds

• Newton-meters

• Meters per second

• Joules

What is the viscosity of water at room temperature in centipoise?

• 1 centipoise

• 0.5 centipoise

• 10 centipoise

• 100 centipoise

What phenomenon is demonstrated by the pitch drop experiment?

• Low density of pitch

• Low pressure resistance of pitch

• High temperature resistance of pitch

• High viscosity of pitch

How does temperature affect the viscosity of liquids?

• Varies randomly

• No effect

• Decreases viscosity

• Increases viscosity

What is the effect of high viscosity on fluid flow in terms of turbulence?

• No effect on turbulence

• Increases turbulence

• Decreases turbulence

• Varies with pressure

What is the term for flow where viscous forces are negligible?

• Turbulent flow

• Compressible flow

• Laminar flow

• Inviscid flow

What type of fluid has a viscosity that decreases with increasing strain rate?

• Shear thinning fluid

• Shear thickening fluid

• Newtonian fluid

• Superfluid

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• Amazon Prime

• Netflix

• YouTube

• Nebula