1. The component used to switch the heat pump unit between the heating and cooling modes of operation is the ____.
a. four-way valve b. bi-valve
c. two-way valve d. switching valve
ANSWER: a
POINTS: 1
REFERENCES: Reverse-Cycle Refrigeration
QUESTION TYPE: Multiple Choice
HAS ...
Unit 1 - Heat, Temperature, and Pressure
Refrigeration and Air Conditioning Technology
1. Which of the following represents a different temperature than the other three?
a. 15°C b. 59°F
c. 475°K d. 519°R
ANSWER: c
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 11:16 AM
2. Of the following choices, the warmest temperature is ____.
a. 20°C b. 303°K
c. 501°R d. 77°F
ANSWER: b
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 11:14 AM
3. Temperature can be thought of as ____.
a. the amount of heat in a material
b. the density of the material
c. a description of the level of heat
d. the weight of the total mass of the material
ANSWER: c
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 3/12/2015 12:21 PM
4. At standard conditions on the Celsius scale, water will boil at ____.
a. 100°C b. 212°C
c. 32°C d. 0°C
ANSWER: a
POINTS: 1
REFERENCES: Temperature
Copyright Cengage Learning. Powered by Cognero. Page 1
,Name Clas Dat
: s: e:
Unit 1 - Heat, Temperature, and Pressure
Refrigeration and Air Conditioning Technology
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 11:14 AM
5. Pure water boils at a temperature of 212°F at which of the following standard conditions?
a. 12.696 psia b. 13.696 psia
c. 14.696 psia d. 15.696 psia
ANSWER: c
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/23/2015 5:29 AM
6. The temperature on the Fahrenheit scale where all molecular biology activity stops is ____.
a. -450°F b. -460°F
c. -0°F d. -462.95°F
ANSWER: b
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 11:15 AM
7. The temperature on the Celsius scale where all molecular activity stops is ____.
a. -273°C b. -293°C
c. -460°C d. -459.6°C
ANSWER: a
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 11:16 AM
8. As the temperature of a material increases, the molecules in the material ____.
a. stop moving
b. travel faster
Copyright Cengage Learning. Powered by Cognero. Page 2
, Name Clas Dat
: s: e:
Unit 1 - Heat, Temperature, and Pressure
Refrigeration and Air Conditioning Technology
c. slow down
d. travel in more of a parallel direction
ANSWER: b
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/11/2015 5:25 PM
9. The Celsius equivalent of 80°F is ____.
a. 25.5°C b. 26.7°C
c. 26.3°C d. 27.5°C
ANSWER: b
POINTS: 1
REFERENCES: Temperature
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 11:18 AM
10. How many Btus are required to change one pound of ice at 20°F to steam at 220°F?
a. 1,304 Btu b. 2,608 Btu
c. 6,520 Btu d. 3,912 Btu
ANSWER: a
POINTS: 1
REFERENCES: Latent Heat
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/23/2015 5:29 AM
11. How many Btus are required to change five pounds of ice at 20°F to steam at 220°F?
a. 1,304 Btu b. 2,608 Btu
c. 6,520 Btu d. 3,912 Btu
ANSWER: c
POINTS: 1
REFERENCES: Latent Heat
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
Copyright Cengage Learning. Powered by Cognero. Page 3
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