HVAC TEST QUESTIONS And ANSWERS(2024 LATEST UPDATE)

Two locations where a cold air return should be installed - ANSWER open area of a wall and low to the ground Which of the following is the law of thermodynamics? - ANSWER heat moves toward a place with lower intensity Sensible heat describes - ANSWER how hot something feels Latent heat is measured in - ANSWER british thermal units What is the amount of heat energy required to evaporate 1 pound of water? - ANSWER 970 btu In an air conditioning system and refrigeration system, what occurs in the evaporator? - ANSWER the refrigerant absorbs the latent heat In an air conditioning system and refrigeration system, what occurs in the condenser? - ANSWER the refrigerant releases the latent heat In a sealed system, pressure and temperature - ANSWER follow each other up and down Which of the follow is not a type of compressor? lateral reciprocating rotary screw centrifugal - ANSWER lateral In Fahrenheit, the boiling point of water is - ANSWER 212 degrees To change Fahrenheit to Celsius, which formula is used? - ANSWER C= (F-32) /1.8 Which is not a method by which heat may be transferred from a warmer substance to a colder substance - ANSWER retraction What btu of heat is required to raise 1 pound of ice 1 degree F when the temperature is below 32 degrees F? - ANSWER .5 What btu of heat is required to raise 1 pound of steam 1 degree F above the temperature of 212 degrees F? - ANSWER .5