Name Quiz 7
Q. 1 & 2 Internal energy cannot be converted directly and completely to mechanical wrk
so it is not included in Bernoulli’s equation.
Q. 3 The general energy equation includes the mechanical energy of the fluid and the
amounts added or removed (by work or heat flow).
There was a typo in question 4, it should be that kinetic energy correction term,
α
, is 2 for
laminar and 1 for turbulent (pg 479).
Q.5 Since Bernoulli’s equation neglects viscous effects everything cancels out except
pressure (this is a superfluid that moves with no resistance).
Q.6 Re = (
ρ
vD)/
μ
Q.7 (See Page 534)
This tells us we have to be extra careful in designing (or analyzing) a
system when Re is between 2,300 and 10,000 because the details of the system will
determine whether it is laminar or turbulent.
Q.8 All these are true for the friction factor.
Q.9
"
=
μ
dv
dy
Q.10
All of these are true.
Question 1 Mechanical energy does NOT include
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 Spring '08
 Landau
 Dynamics, Fluid Dynamics, Kinetic Energy, Mass Transfer, Mathematical Expression, kinetic energy correction

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