FLUID MECHANICS FINAL EXAM
REVIEW EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
The surface force acting on a differential surface element shown in the figure
is the ___________ product of a stress tensor and the unit outward normal
vector. - CORRECT-ANSWERScontracted
__________ equation is an approximate relation between pressure, velocity,
and elevation, and is valid in regions of steady, incompressible flow where
net frictional forces are negligible.
Newton's
Navier-Stokes
Andrade's
The Bernoulli - CORRECT-ANSWERSThe Bernoulli
For steady and single-stream flow, where 1 and 2 denote the inlet and the
outlet, respectively. Select the correct equations reflecting the mass
balance. (Check all that apply)
m1 = constant
p1*V1*A1 = p2*V2*A2
p1*V1*A1 = 0
m1 = m2 - CORRECT-ANSWERSm1 = m2, p1*V1*A1 = p2*V2*A2,
,In fluid mechanics, Newton's second law is usually referred to as the _______
equation.
conservation of energy
linear momentum
Bernoulli
angular momentum - CORRECT-ANSWERSLinear momentum
The conservation relations are also called __________ equations since any
conserved quantity must balance during a process. - CORRECT-
ANSWERSbalance
The conservation of energy principle requires that the change in the energy
content of a system be ________ the net energy transfer to or from the
system during a process.
less than
more than
independent of
equal to - CORRECT-ANSWERSequal to
In a water-cooled nuclear reactor, the reactor core must be always filled with
water. if the reactor converts 20 kg of water to steam every second, select
the acceptable scenarios from the following.
, Two pumps with an output mass flow rate of 10kg/s each are to be used to
keep the core full.
Two pumps with output mass flow rate of 5kg/s each are to be to keep the
core full
A pump with an output mass flow rate of 10kg/s is to be used to keep the
core full.
A pump with an output mass flow rate of 20kg/s is to be used to keep the
core full. - CORRECT-ANSWERSTwo pumps with an output mass flow rate of
10kg/s each are to be used to keep the core full.
A pump with an output mass flow rate of 20kg/s is to be used to keep the
core full.
The important distinguishing feature of a moving or deformed control volume
is that the concept of relative _______ is to be involved.
current
volume
velocity
density - CORRECT-ANSWERSvelocity
REVIEW EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
The surface force acting on a differential surface element shown in the figure
is the ___________ product of a stress tensor and the unit outward normal
vector. - CORRECT-ANSWERScontracted
__________ equation is an approximate relation between pressure, velocity,
and elevation, and is valid in regions of steady, incompressible flow where
net frictional forces are negligible.
Newton's
Navier-Stokes
Andrade's
The Bernoulli - CORRECT-ANSWERSThe Bernoulli
For steady and single-stream flow, where 1 and 2 denote the inlet and the
outlet, respectively. Select the correct equations reflecting the mass
balance. (Check all that apply)
m1 = constant
p1*V1*A1 = p2*V2*A2
p1*V1*A1 = 0
m1 = m2 - CORRECT-ANSWERSm1 = m2, p1*V1*A1 = p2*V2*A2,
,In fluid mechanics, Newton's second law is usually referred to as the _______
equation.
conservation of energy
linear momentum
Bernoulli
angular momentum - CORRECT-ANSWERSLinear momentum
The conservation relations are also called __________ equations since any
conserved quantity must balance during a process. - CORRECT-
ANSWERSbalance
The conservation of energy principle requires that the change in the energy
content of a system be ________ the net energy transfer to or from the
system during a process.
less than
more than
independent of
equal to - CORRECT-ANSWERSequal to
In a water-cooled nuclear reactor, the reactor core must be always filled with
water. if the reactor converts 20 kg of water to steam every second, select
the acceptable scenarios from the following.
, Two pumps with an output mass flow rate of 10kg/s each are to be used to
keep the core full.
Two pumps with output mass flow rate of 5kg/s each are to be to keep the
core full
A pump with an output mass flow rate of 10kg/s is to be used to keep the
core full.
A pump with an output mass flow rate of 20kg/s is to be used to keep the
core full. - CORRECT-ANSWERSTwo pumps with an output mass flow rate of
10kg/s each are to be used to keep the core full.
A pump with an output mass flow rate of 20kg/s is to be used to keep the
core full.
The important distinguishing feature of a moving or deformed control volume
is that the concept of relative _______ is to be involved.
current
volume
velocity
density - CORRECT-ANSWERSvelocity
