MEEN 345 EXAM 1 QUESTIONS AND VERIFIED
ANSWERS
Which of the followings is not the objectives of Lab 1 (Fluid Viscosity and Viscometers)?
a.) Measure the viscosity of fluid using a rotary viscometer
b.) Determine the temperature dependence of fluid viscosity
c.) Determine the pressure dependence on fluid viscosity
d.) Classify the fluids as Newtonian or Non-Newtonian - Answers - c.) Determine the
pressure dependence of fluid velocity
You are given experimental data below measured by a Cole Parmer rotary viscometer.
Although the fluid is unknown, you can classify the fluids as Newtonian, shear
thickening, and/or shear thinning. Please classify each fluid:
A.) Exponential Decay
B.) Exponential Growth
C.) Linear - Answers - A.) Shear thinning fluid
B.) Shear thickening fluid
C.) Newtonian fluid
When temperature of the oil increases, the distance between the molecules in the oil
increases and the cohesive force decreases. Therefore, the viscosity of oil increases as
the temperature of the oil increases.
True/False - Answers - False
Which of the following fluids will be tested in this lab? Select all that apply.
1. motor oil
2. ketchup
3. water
4. coolant - Answers - motor oil & ketchup
As indicated in the video lecture, which of the following should be included in the
Appendix of your report?
1. experimental procedure
2. list of equipment
3. conclusions
4. sample calculations - Answers - sample calculations
For Newtonian Fluids, the viscosity of the fluids do NOT vary with the temperature. Is
the statement true or false? - Answers - false
Which of the following fluids can be classified as shear thickening fluid?
, cornstarch in water
ketchup
motor oil
(wall) paint - Answers - cornstarch in water
Which of the following fluids can be classified as non-Newtonian?
blood
water
air
motor oil - Answers - blood
Which of the following is not an objective of LAB 2 (Bernoulli's Theory)?
A.)To verify Bernoulli's theory by demonstrating the relationship between velocity head
and pressure head
B.)To determine how friction affects Bernoulli's theory
C.)To calibrate different types of flowmeters by measuring the pressure drop across the
flow elements
D.)To learn how a Piezo tube works - Answers - C.)To calibrate different types of
flowmeters by measuring the pressure drop across the flow elements
The piezometric head of a flow is:
a.) the sum of the velocity head and elevation head
b.)the sum of the pressure head and elevation head
c.)the sum of the pressure head and velocity head
d.)the sum of the velocity head, pressure head and elevation head - Answers - b.)the
sum of the pressure head and elevation head
The following device is used to examine the flow of water through a
convergent/divergent passage of rectangular cross section. If the inlet head H1 stays
constant while the outlet head H2 decreases, the volumetric flow rate inside of the test
section increases.
True/False - Answers - True
The following device is used to examine the flow of water through a
convergent/divergent passage of rectangular cross section.
When H1 and H2 stay constant (H1 > H2), which piezo tube has the smallest pressure
head? Assume no head loss due to friction.
piezo tube 1
piezo tube 3
piezo tube 6
ANSWERS
Which of the followings is not the objectives of Lab 1 (Fluid Viscosity and Viscometers)?
a.) Measure the viscosity of fluid using a rotary viscometer
b.) Determine the temperature dependence of fluid viscosity
c.) Determine the pressure dependence on fluid viscosity
d.) Classify the fluids as Newtonian or Non-Newtonian - Answers - c.) Determine the
pressure dependence of fluid velocity
You are given experimental data below measured by a Cole Parmer rotary viscometer.
Although the fluid is unknown, you can classify the fluids as Newtonian, shear
thickening, and/or shear thinning. Please classify each fluid:
A.) Exponential Decay
B.) Exponential Growth
C.) Linear - Answers - A.) Shear thinning fluid
B.) Shear thickening fluid
C.) Newtonian fluid
When temperature of the oil increases, the distance between the molecules in the oil
increases and the cohesive force decreases. Therefore, the viscosity of oil increases as
the temperature of the oil increases.
True/False - Answers - False
Which of the following fluids will be tested in this lab? Select all that apply.
1. motor oil
2. ketchup
3. water
4. coolant - Answers - motor oil & ketchup
As indicated in the video lecture, which of the following should be included in the
Appendix of your report?
1. experimental procedure
2. list of equipment
3. conclusions
4. sample calculations - Answers - sample calculations
For Newtonian Fluids, the viscosity of the fluids do NOT vary with the temperature. Is
the statement true or false? - Answers - false
Which of the following fluids can be classified as shear thickening fluid?
, cornstarch in water
ketchup
motor oil
(wall) paint - Answers - cornstarch in water
Which of the following fluids can be classified as non-Newtonian?
blood
water
air
motor oil - Answers - blood
Which of the following is not an objective of LAB 2 (Bernoulli's Theory)?
A.)To verify Bernoulli's theory by demonstrating the relationship between velocity head
and pressure head
B.)To determine how friction affects Bernoulli's theory
C.)To calibrate different types of flowmeters by measuring the pressure drop across the
flow elements
D.)To learn how a Piezo tube works - Answers - C.)To calibrate different types of
flowmeters by measuring the pressure drop across the flow elements
The piezometric head of a flow is:
a.) the sum of the velocity head and elevation head
b.)the sum of the pressure head and elevation head
c.)the sum of the pressure head and velocity head
d.)the sum of the velocity head, pressure head and elevation head - Answers - b.)the
sum of the pressure head and elevation head
The following device is used to examine the flow of water through a
convergent/divergent passage of rectangular cross section. If the inlet head H1 stays
constant while the outlet head H2 decreases, the volumetric flow rate inside of the test
section increases.
True/False - Answers - True
The following device is used to examine the flow of water through a
convergent/divergent passage of rectangular cross section.
When H1 and H2 stay constant (H1 > H2), which piezo tube has the smallest pressure
head? Assume no head loss due to friction.
piezo tube 1
piezo tube 3
piezo tube 6
