Fluid Properties

Viscosity a property that represents the resistance of a fluid to motion.

• True

• False

Newton's law of viscosity states that the shear stress is directly proportional to the velocity gradient.

• True

• False

The no-slip condition at a solid boundary, a viscous fluid has a velocity equal to:

• 1 m/s

• 0 m/s

• 10 m/s

The viscosity of a liquid decreases when the temperature:

• Decrease

• Increase

• Not related

In Newtonian fluids viscosity ....... according to the force applied.

• Does not change

• Change

• Zero

In Non-Newtonian fluids viscosity ....... according to the force applied.

• Does not change

• Change (variable)

• Zero

Choose the correct types of Non-Newtonian fluids:

• Shear thinning fluid

• Shear thickening fluid

• Water

In Shear-thickening fluid, viscosity increases with increasing shear rate or the force applied for example the cornstarch.

• True

• false

In shear-thinning fluid, viscosity decreases with increasing shear rate or the force applied for example ketchup, paint, and blood.

• True

• false

The buoyancy force of fluid on an object is equal to:

• weight of the fluid dicplaced

• weight of the steel

• weight of the wood