MEEN 464 Exam 1 | UPDATED Questions with 100% Verified Answers
Question:
What are the objectives of Lab 1?
Answer:
To determine and compare the transient responses of
temperature measuring devices, to determine and compare the
steady state accuracies of temperature measuring devices, and
to conduct uncertainty analyses with experimental data
Question:
Which thermocouple will have the shortest time constant?
Answer:
30-gage T-type thermocouple with an exposed junction
Question:
Resistance temperature detectors measure the temperature by:
Answer:
the change in electrical resistance in pure metals as a function
of temperature
Question:
Which of the following is not an objective of lab 2?
Answer:
To determine the instantaneous, one dimensional temperature
distribution along a metallic rod subjected to a sudden change
of the boundary conditions
Question:
Consider a constant cross sectional area fin. Which fin
dissipates the least heat?
Answer:
0.5 inch diameter carbon steel fin
,Question:
When designing a fin, carbon steel is typically better choice
than aluminum.
Answer:
False
Question:
The following graph shows temperature profiles along the
axial direction of four fins with same geometry. According to
the following temperature profile, which fin dissipates the
most heat between the fin and the surrounding? Assume that
fin base temperature remains the same.
Answer:
The horizontal line
Question:
Which of the following is not an objective of lab 3?
Answer:
To determine the transient, one dimensional temperature
distribution along a constant rod subjected to a sudden change
of the boundary conditions
Question:
Which of the following has the largest thermal conductivity?
Answer:
Copper
Question:
As mentioned in the video lecture, the heat transfer problem
to find the unknown thermal conductivities of the rods in our
experiment can be approximated as __________________
, Answer:
Perfect insulation of the rods, constant properties of the
material such as thermal conductivities, and 1-dimensional
heat conduction along the axis of the rods
Question:
Which of the following is not a correct statement on thermal
conductivity?
Answer:
Thermal conductivity of a material does not vary with
temperature
Question:
Consider a cylindrical rod with a constant cross-section area
which is in contact with an electrical heater at one end, and a
heat sink at the other end. The heater is held at 80 °C. and the
rod is well insulated. The rod's steady state temperature
distribution and a linear interpolation are given on the plot
below. If the thermal conductivity of the rod is 205 W/(m-K),
and the diameter of the rod is 5.5cm, find the heat transfer rate
(in watt) through the rod.
Answer:
14.6
Question:
Which of the following is not the objectives of lab 4?
Answer:
To find the unsteady temperature distribution along three
horizontal rods
Question:
Which of the following has the lowest thermal conductivity?
Question:
What are the objectives of Lab 1?
Answer:
To determine and compare the transient responses of
temperature measuring devices, to determine and compare the
steady state accuracies of temperature measuring devices, and
to conduct uncertainty analyses with experimental data
Question:
Which thermocouple will have the shortest time constant?
Answer:
30-gage T-type thermocouple with an exposed junction
Question:
Resistance temperature detectors measure the temperature by:
Answer:
the change in electrical resistance in pure metals as a function
of temperature
Question:
Which of the following is not an objective of lab 2?
Answer:
To determine the instantaneous, one dimensional temperature
distribution along a metallic rod subjected to a sudden change
of the boundary conditions
Question:
Consider a constant cross sectional area fin. Which fin
dissipates the least heat?
Answer:
0.5 inch diameter carbon steel fin
,Question:
When designing a fin, carbon steel is typically better choice
than aluminum.
Answer:
False
Question:
The following graph shows temperature profiles along the
axial direction of four fins with same geometry. According to
the following temperature profile, which fin dissipates the
most heat between the fin and the surrounding? Assume that
fin base temperature remains the same.
Answer:
The horizontal line
Question:
Which of the following is not an objective of lab 3?
Answer:
To determine the transient, one dimensional temperature
distribution along a constant rod subjected to a sudden change
of the boundary conditions
Question:
Which of the following has the largest thermal conductivity?
Answer:
Copper
Question:
As mentioned in the video lecture, the heat transfer problem
to find the unknown thermal conductivities of the rods in our
experiment can be approximated as __________________
, Answer:
Perfect insulation of the rods, constant properties of the
material such as thermal conductivities, and 1-dimensional
heat conduction along the axis of the rods
Question:
Which of the following is not a correct statement on thermal
conductivity?
Answer:
Thermal conductivity of a material does not vary with
temperature
Question:
Consider a cylindrical rod with a constant cross-section area
which is in contact with an electrical heater at one end, and a
heat sink at the other end. The heater is held at 80 °C. and the
rod is well insulated. The rod's steady state temperature
distribution and a linear interpolation are given on the plot
below. If the thermal conductivity of the rod is 205 W/(m-K),
and the diameter of the rod is 5.5cm, find the heat transfer rate
(in watt) through the rod.
Answer:
14.6
Question:
Which of the following is not the objectives of lab 4?
Answer:
To find the unsteady temperature distribution along three
horizontal rods
Question:
Which of the following has the lowest thermal conductivity?
