Quiz - Thermal Strain - ANSYS Innovation Courses

Quiz Summary

0 of 10 Questions completed

Questions:

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading...

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 10 Questions answered correctly

Your time:

You have reached 0 of 0 point(s), (0)

Current
Review
Answered
Correct
Incorrect

Question 1 of 10

1. Question
Thermal strain is based on which quantity:
- 1) Heat transfer coefficient
- 2) Coefficient of thermal expansion
- 3) Change in temperature
- 4) 1 & 3
- 5) 2 & 3
Question 2 of 10

2. Question
Which of the following statement is true about thermal stress?
- 1) A component that has a uniform temperature will not have thermal stress
- 2) Temperature gradient will always result in thermal stress
- 3) Objects with high thermal conductivity tend to have less thermal stress
- 4) Thermal stress can be so large that causes failure of the material
Question 3 of 10

3. Question
True or false: thermal strain does not contribute to the deviatoric terms of a strain matrix.
- 1) True
- 2) False
Question 4 of 10

4. Question
Which of the following example does not have thermal strain?
- 1) A constrained circuit board under heavy working load
- 2) Railroad exposed in the sun for a long day in the summer
- 3) A hot steel in a furnace that has the same temperature
- 4) Ice thrown into hot water
Question 5 of 10

5. Question
Why does thermal strain usually appear as a scalar?
- 1) Thermal expansion coefficient is usually the same in three directions
- 2) Thermal strain is not caused by a force
- 3) Thermal strain only happens in a one-dimensional case
- 4) All strains are scalars
Question 6 of 10

6. Question
What could possibly happen when a rebar reinforced concrete beam is in a fire?
- 1) Steel rebars constraint concrete and limits the concrete's expansion
- 2) Steel rebars expand more than concrete and cause tensile cracks in the concrete
- 3) Steel rebars provide a cooling effect to the covering concrete
- 4) Steel rebars and concrete expands at the same rate
Question 7 of 10

7. Question
Residual stresses are the stress in an object when it is unloaded. What could cause residual stress in a steel hot rolling process?
- 1) Cooling process is too slow
- 2) Not providing high enough temperature
- 3) Too much of the plastic deformation
- 4) Different part of the material has different cooling rate and thus causes thermal strain
Question 8 of 10

8. Question
What can we learn from the simulation railroad buckling example?
- 1) Thermal strain is always undesirable
- 2) Thermal strain cannot cause high internal stress as buckling stress is usually small
- 3) A small gap is needed between different sectors of rails to allow thermal expansion
- 4) Materials with low thermal expansion coefficient are more suitable for rail road
Question 9 of 10

9. Question
A traditional mercury thermometer uses the thermal expansion property. Which of the following statement is true?
- 1) There is thermal strain developed in the mercury
- 2) Water has higher thermal expansion coefficient, thus it is better to use water
- 3) There is no constraint on the mercury and it can expand freely, thus no thermal strain is developed
- 4) It takes a few minutes for the temperature to become stable because mercury's thermal expansion coefficient is not high enough
Question 10 of 10

10. Question
When throwing an ice cube into hot water:
- 1) There is a high temperature gradient on the ice surface
- 2) Ice could crack because of high thermal strain
- 3) Even if there is no external constraint on the ice, the high temperature gradient will also cause thermal strain
- 4) All of the above

Quiz - Thermal Strain

Quiz - Thermal Strain

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question