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1 Two locations where a cold air return should be installed:
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2 Which of the following is a law of thermodynamics:
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3 Sensible heat describes _________________________.
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4 Latent heat measures _______________________.
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5 Latent heat is measured in ____________________.
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6 If 1 pound of water warms to 60 degrees F from 55 degrees F, what btu of latent heat will it have absorbed?
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7 What is the amount of heat energy required to evaporate 1 pound of water?
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8 In an air conditioning and refrigeration system, what occurs in an evaporator?
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9 In an air conditioning and refrigeration system, what occurs in a condenser?
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10 In a sealed system, pressure and temperature _________________.
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11 Which of the following is not a type of compressor?
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12 In Fahrenheit, the boiling point of water is _____________.
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13 To change Fahrenheit to Celsius, which formula is used?
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14 Which of the following is not a method by which heat may be transferred from a warmer substance to a colder substance?
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15 What btu of heat is required to raise 1 pound of ice 1 degree F when the temperature is below 32 degrees F?
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16 What btu of heat is required to raise 1 pound of steam 1 degree F above the temperature of 212 degrees F?
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17 A day-ton of refrigeration is the amount of refrigeration produced by melting 1 ton of ice at a temperature of 32 degrees F in 24 hours.
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18 Ice exerts pressure ________________.
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19 Pressure is usually measured in ___________.
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20 Atmospheric pressure, at sea level, is 14.7 psia.
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21 When one rises into the atmosphere, the atmospheric pressure decreases by 1 psi for every_________________.
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22 Vaporization can be increased by _____________ the pressure on a liquid.
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23 Every mechanical refrigeration system has __________ different pressure levels.
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24 Pressure on the high pressure side of a mechanical refrigeration unit is called _______________.
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25 The exertion of pressure on a substance with a constant temperature increases its volume in proportion to the increase in pressure.
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