FM4-2

What type of flow occurs when the fluid particles move in very irregular paths, causing an exchange of momentum from one portion of the fluid to another?

• Steady flow

• Turbulent flow

• Uniform flow

• Laminar flow

Which law governs laminar flow and relates shear stress to rate of angular deformation?

• Newton's second law

• Newton's first law

• Newton's third law

• Newton's law of viscosity

What type of flow occurs when conditions at any point in the fluid do not change with time?

• Turbulent flow

• Laminar flow

• Unsteady flow

• Steady flow

When does uniform flow occur?

• When the velocity vector varies from place to place at any instant

• When the flow is reversible

• When the velocity vector is identical for any given instant

• When the flow is turbulent

What is the layer of fluid in the immediate neighborhood of an actual flow boundary that has had its velocity relative to the boundary affected by viscous shear called?

• Control volume

• Boundary layer

• Streamline

• Streamtube

What type of flow neglects variations or changes in velocity, pressure, etc., transverse to the main flow direction?

• Steady flow

• Two-dimensional flow

• Unsteady flow

• One-dimensional flow

What is a streamline in fluid mechanics?

• A layer of fluid in the immediate neighborhood of an actual flow boundary

• A solid walled pipe

• A tubular region of fluid surrounded by streamlines

• A continuous line drawn through the fluid with the direction of the velocity vector at every point

What is the law of conservation of mass for a system?

• N=ηm

• ΣF=mv

• dm/dt=0

• δv/δt=0

What is the law of Newton's second law of motion for a system?

• δv/δt=0

• dm/dt=0

• ΣF=mv

• N=ηm

What is the layer of fluid in the immediate neighborhood of an actual flow boundary that has had its velocity relative to the boundary affected by viscous shear called?

• Boundary layer

• Streamtube

• Streamline

• Control volume