Air Conditioning Certification Exam (Exam Code A-02)|| 100 Questions|| Accurate 100%

Air Conditioning Certification Exam (Exam Code A-02)|| 100 Questions|| Accurate 100%Heat which causes a change in temperature of a substance is called; - ANSWER sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - ANSWER latent heat. Heat which is added to a vapor after the change of state occurs is called; - ANSWER superheat. Heat can travel by; - ANSWER conduction, convection, radiation. The movement of heat by way of fluid (or air) is called; - ANSWER convection . The movement of heat by direct contact is called; - ANSWER conduction . The standard unit for measuring the quantity of heat in a substance is; - ANSWER the British Thermal Unit (Btu). A refrigerat gives up heat when; - ANSWER it condenses. It is desirable for refrigerant in the suction line to be slightly superheated in order to; - ANSWER insure liquid refrigerant does not enter the compressor. The state of refrigerant in the suction line should be; - ANSWER low pressure/ low temperature. The state of the refrigerant entering the condenser is; - ANSWER high pressure/ highly superheated liquid. The evaporator; - ANSWER Transfers heat from the refrigerant to the ambient air. Which of the following is NOT a thermodynamic property of refrigerants? a) Critical point.