Intro to Fluids

A _____is a substance which conforms continuously under the action of shearing forces

Is a physical science that deals with the action of fluids at rest or in motion, and with applications and devices in engineering using fluids.

• Hydraulics

• Fluid Mechanics

If a fluid is at rest, there can be no shearing forces acting and therefore all forces in the fluid must be perpendicular to the planes in which they act.

• True

• False

The acceleration due to gravity will always be taken as ____ .

• 9.81 m/s^2

• 9.79 m/s^2

The equation shown in the figure is known as ______ .

• Newton's Law of Viscosity

• Newton's Law of Thermodynamics

Fluids assumed to have no viscosity, incompressible and have uniform velocity when flowing.

• Real fluids

• Ideal fluids

The mass per unit volume of a substance, usually denoted as р.

• Specific Weight

• Relative Density

• Bulk Modulus

• Mass Density

The weight of a unit volume of a substance.

• Mass Density

• Specific Weight

• Specific Volume

• Specific Gravity

A dimensionless measure of the density of a substance with reference to the density of some standard substance, usually water at 4 deg. C.

• Relative Density

• Bulk Modulus

• Specific Gravity

• Viscosity

Viscosity of a fluid determines the amount of resistance to shear force. The unit of viscosity is/are?

• Pa-s

• kg-m/s/m^2

• N-s/m^2

• All of the above