NATE A/C Exam #2 CORRECT 100%

NATE A/C Exam #2 CORRECT 100%
The Fahrenheit scale is based on boiling water at sea level at what temperature?



A: 459 degrees



B: 212 degrees



C: 180 degrees



D: 100 degrees - ANSWERB: 212 degrees



Zero pounds gauge corresponds on the absolute scale to:



A: 144



B: 212



C: 14.7



D: zero - ANSWERC: 14.7



Hidden heat in refrigeration work is referred to as:



A: Intensity of heat



B: Latent heat



C: Heat a thermometer can "sense"



D: Cold - ANSWERB: Latent heat

,Absolute zero on the Fahrenheit scale is:



A: 459 degrees



B: 273 degrees



C: 100 degrees



D: 0 degrees - ANSWERA: 459 degrees



A ton of refrigeration is a unit equal to:



A: 2,880,000 btu per day



B: 12,000 btu per hour



C: 2,000 btu per minute



D: All of these are correct - ANSWERB: 12,000 btu per hour



The heat used to change a liquid to a gas is called the latent heat of:



A: Absorption



B: Vaporization



C: Fusion



D: Liquid - ANSWERB: Vaporization

, A thermometer is said to "sense" what?



A: Heat of fusion



B: Latent heat



C: Sensible heat



D: Specific heat - ANSWERC: Sensible heat



Five pounds of water is heated by two degrees F. How many btu were added to the water?



A: 25 btu



B: 10 btu



C: 5 btu



D: 2 btu - ANSWERB: 10 btu



Wght x deg raise = btu's

5 x 2 = 10 btu's



The amount of heat required to melt one pound of ice at 32 degrees F is:



A: 212 btu



B: 180 btu



C: 144 btu