1.
|
|
To the nearest degree, what is absolute zero on the Celsius scale?
|
| 0oC |
| 32oC |
| 273oC |
| -273oC |
|
2.
|
|
To the nearest degree, if room temperature is 65oF what is it in oC?
|
| 18 |
| 36 |
| 59 |
| 5 |
|
3.
|
|
To the nearest degree, if it is hot outside at 100oF what is it in oC?
|
| 5oC |
| 20oC |
| 38oC |
| 56oC |
|
4.
|
|
What is -40oC on the Fahrenheit scale?
|
| -40oF |
| -72oF |
| -104oF |
| 5oF |
|
5.
|
|
To the nearest degree, what is absolute zero on the Fahrenheit scale?
|
| -491oF |
| -460oF |
| -373oF |
| -250oF |
|
|
|
The Rankine temperature scale bears the same relationship to the Fahrenheit scale as the Kelvin does to the Celsius. To the nearest degree, what is the freezing point in Rankine?
|
| 273 R |
| 460 R |
| 492 R |
| 672 R |
|
7.
|
|
Temperature one is 10oC and the second temperature is 30oC. What is the average temperature in Kelvin?
|
| 283 K |
| 293 K |
| 303 K |
| 566 K |
|
8.
|
|
What is the difference in Co of the two temperatures, 35oF and 62oF?
|
| 15 Co |
| 37 Co |
| 49 Co |
| None of the above. |
|
9.
|
|
If the temperature difference in Celsius is 50oC, what is the difference in Fahrenheit?
|
| 28 Fo |
| 122 Fo |
| 60 Fo |
| 90 Fo |
|
10.
|
|
Which of the following temperatures is the highest?
T1= 25oC, T2= 72oF, T3= 290 K, T4=510 R
|
| T1 |
| T2 |
| T3 |
| T4 |
|
11.
|
|
The coefficient of thermal (linear) expansion,a, for aluminum is 25x10-6(Co)-1. What is the change in length of a 1 meter bar if the temperature increases 30 Co?
|
| .25 mm |
| .50 mm |
| .75 mm |
| 1 mm |
|
12.
|
|
The coefficient of thermal expansion for iron is 12x10-6(Co)-1. Which will expand more as temperature increases, a 2 meter iron bar or a 1 meter aluminum bar?
|
| aluminum |
| iron |
| Both the same. |
|
13.
|
|
A 1 meter diameter hole is cut into a aluminum sheet and the temperature is increased by 100 Co. What is the new diameter of the hole?
|
| .9975 m |
| .4989 m |
| 1.0025 m |
| .5013 m |
|
14.
|
|
An aluminum hollow metal sphere with a radius of 1 meter is exposed to a 200 Fo temperature increase. What is the ratio of the new volume to the old one?
|
| 1.008 |
| 1.015 |
| 1.020 |
| 1.025 |
|
15.
|
|
The coefficient of volume expansion, beta, for Pyrex is 9x10-6(Co)-1 and the coefficient of thermal expansion, alpha, for ethyl alcohol is 1100x10-6(Co)-1. If the alcohol fills 50% of a Pyrex bottle what % will it occupy if the temperature is increased by 30 Co?
|
| 50 % |
| 51 % |
| 52 % |
| 53 % |
|
16.
|
|
The unit of emissivity is
|
| J. |
| J/s. |
| J/m2. |
| none of these. |
|
17.
|
|
A spaceship is drifting in an environment where the acceleration of gravity is essentially zero. As the air on one side of the cabin is heated by an electric heater, what is true about the convection currents caused by this heating?
|
| The hot air around the heater rises and the cooler air moves in to take its place. |
| The hot air around the heater drops and the cooler air moves in to take its place. |
| There are no conventional convection currents. |
|
18.
|
|
Radiant energy is proportional to
|
| T. |
| T2. |
| T3. |
| T4. |
|
19.
|
|
Conduction is proportional to
|
| Temperature. |
| Temperature Difference. |
| Thickness. |
| Emissivity. |
|
20.
|
|
Conduction is inversely proportional to
|
| Temperature. |
| Temperature Difference. |
| Thickness. |
| Emissivity. |
|
21.
|
|
If the thickness of a brick is 8 cm and its conductivity is 0.8J/s*m*Co. What is its thermal resistance?
|
| 8.8 |
| 10 |
| 0.1 |
| 0.64 |
|
22.
|
|
If a wooden wall is 8 cm thick and has a conductivity of .08 J/s*m*Co, what is its thermal resistance?
|
| 8.08 |
| 100 |
| 1 |
| .0064 |
|
23.
|
|
If a wall is composed of 8 cm of wood and 8 cm of brick, what would be its total thermal resistance?
|
| .1 |
| 10 |
| 1.1 |
| 1.0 |
|
24.
|
|
A piece of hot metal is put into an equal mass of water. The water temperature rises 5 degrees and the metal's temperature drops 10 degrees. What is the specific heat of the metal?
|
| 2 kcal/kg*C. |
| 1 kcal/kg*C. |
| .5 kcal/kg*C. |
| Not enough information. |
|
25.
|
|
The specific heat of glass is 0.2 kcal/kg. If you put 1 kg of glass in contact with an equal mass of water and its temperature drops 5 degrees, by how much will the temperature of the water rise?
|
| 1 Co |
| 2 Co |
| 5 Co |
| 10 Co |
