ME 373 Exam 2 Conceptual Review

Question 1

The Bernoulli equation shows that there is a tradeoff between ______ and ______ when gravitational effects are small.

Accepted Answer

pressure and velocity

Question 2

The Bernoulli equation applies to streamtubes when the flow is frictionless, incompressible, and steady.

Accepted Answer

True

Question 3

Momentum is a vector quantity. When Newton's 2nd law is applied to a CV, it provides __________ equation(s).

Accepted Answer

three

Question 4

When gravity effects are small and streamlines are straight, pressure change perpendicular to the flow is ______.

Accepted Answer

negligible

Question 5

Which law or theorem provides the rigorous mathematical link between control volumes and systems?

Accepted Answer

Reynolds transport theorem

Question 6

The Bernoulli equation applies to flows in which the density of the fluid depends on pressure.

Accepted Answer

False

Question 7

The laws of physics strictly apply to ____________.

Accepted Answer

systems (closed thermodynamic systems)

Question 8

A ___________ is a line everywhere tangent to the velocity field.

Accepted Answer

streamline

Question 9

In a steady flow, when the conservation of mass is a applied to a control volume, it shows that...

Accepted Answer

what mass flows in to the CV must also flow back out

Question 10

Fluid is able to smoothly flow around sharp corners.

Accepted Answer

False

Questions 10