HVAC Excellence Exam _ The Most Tested Questions with Correct Answers _ Rated A+ 100%

HVAC Excellence Exam _ The Most Tested Questions with Correct Answers _ Rated A+ 100% Heat which causes a change in temperature of a substance is called. - CORRECT ANSWER-sensible heat. Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process is called? - CORRECT ANSWER-Latent heat Heat added to the refrigerant in a vapor state after the evaporator process is called. - CORRECT ANSWER-Superheat A scroll compressor moves refrigerant by means of. - CORRECT ANSWER-Involute spirals The movement of heat by way of fluid or is called air or gas. - CORRECT ANSWER-Convection The movement of heat through a solid object is called. - CORRECT ANSWER-Conduction The standard unit for measuring the QUANTITY of heat in a substance is (intensity would be temp) - CORRECT ANSWER-British thermal unit A refrigerant gives up heat when it. - CORRECT ANSWER-It condenses Why must refrigerant in the suction line be slightly warmer than the saturation temperature? - CORRECT ANSWER-Prevent liquid slugging of the compressor It is desirable for refrigerant in the suction line to be slightly superheated in order to. - CORRECT ANSWER-Insure liquid refrigerant does not enter the compressor The state of the refrigerants in the suction line should be. - CORRECT ANSWER-Low pressure / Low temperature vapor The state of the refrigerant entering the condenser is. - CORRECT ANSWER-High pressure / Highly superheated vapor The evaporator. - CORRECT ANSWER-Transfers heat from the refrigerated space to the refrigerant Which of the following is not a thermodynamic property of refrigerant. - CORRECT ANSWER-Flammability