Rheology Quiz

What is the study of the flow and deformation of matter under stress called?

• Rheology

• Thermodynamics

• Fluid Dynamics

• Kinematics

What type of deformation occurs in an ideal solid when stress is removed?

• Irreversible deformation

• Elastic deformation

• Plastic deformation

• Viscoelastic deformation

What is the term for the irreversible deformation of a real solid under stress?

• Yield stress

• Creep

• Elasticity

• Viscosity

Which of the following is a characteristic of Newtonian fluids?

• Variable viscosity with temperature

• Yield value dependency

• Constant viscosity regardless of shear rate

• Non-linear relationship between shear stress and shear rate

What is the unit of viscosity commonly used?

• Joule

• Newton

• Poise

• Pascal

What happens to viscosity as temperature increases?

• Viscosity decreases

• Viscosity increases

• Viscosity remains constant

• Viscosity fluctuates

Which type of flow is characterized by a decrease in viscosity with increasing shear stress?

• Dilatant flow

• Pseudoplastic flow

• Newtonian flow

• Bingham flow

What is the term for the phenomenon where a material slowly recovers its original viscosity after being sheared?

• Thixotropy

• Viscoelasticity

• Plasticity

• Elasticity

In which type of viscometer is the viscosity determined by the time taken for a liquid to flow between two marks?

• Rotational viscometer

• Capillary viscometer

• Cone-and-plate viscometer

• Falling-sphere viscometer

What is the primary characteristic of dilatant flow?

• Increased viscosity with increased shear

• Decreased viscosity with increased shear

• Constant viscosity

• Yield stress dependency