Hvac excellence - Study guides, Class notes & Summaries

HVAC Excellence UPDATED Exam Questions and CORRECT Answers Heat which causes a change in temperature of a substance is called - Ans sensible heat, Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process la called? - Ans latent heat

HVAC Excellence - ELECTRICITY Exam Questions And Answers Current flow is: - ANS The flow of electrons in the circuit. Impedance is: - ANS Opposition to alternating current flow. Like charges; - ANS repel each other. Any material that will readily release electrons is called; - ANS A conductor The symbol for current is; - ANS I Which of the following materials would be best suited for use as a semiconductor? - ANS silicon The safety ground conductor is usually co...

HVAC Excellence - ELECTRICITY Exam Questions And Answers Current flow is: - ANS The flow of electrons in the circuit. Impedance is: - ANS Opposition to alternating current flow. Like charges; - ANS repel each other. Any material that will readily release electrons is called; - ANS A conductor The symbol for current is; - ANS I Which of the following materials would be best suited for use as a semi-conductor? - ANS silicon The safety ground conductor is usu...

HVAC EXCELLENCE EXAM QUESTIONS AND ANSWERS Heat which causes a change in temperature of a substance is called - ANS sensible heat, Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process la called? - ANS latent heat Heat added to the refrigerant in vapor state after the evaporation process is called, - ANS superheat A scroll compressor moves refrigerant by means of; - ANS involute spirals The movement of heat by w...

HVAC Excellence - ELECTRICITY Exam -With 100% verified solutions

HVAC Excellence exam study guide #2

What is an HVAC System? - correct answer all the items needed to maintain thermal comfort within a space or group of spaces What are the four components of an HVAC system? - correct answer Fans Pumps Compressor Evaporator What is a PTAC? - correct answer Packaged Terminal Air Conditioner What is a PTHP? - correct answer Packaged Terminal Heat Pump List the heat transfer equipment (3) - correct answer Boiler Chiller Coil What is a zone? - correct answer A zone is a separately ...

Electric Heat ESCO - HVAC Excellence Exam Questions And Answers Before working on an electric furnace the tech should - ANS Review diagram, remove jewelry, and follow safety procedures. ALL OF THE ABOVE. A GFCI circuit breaker - ANS detects current leaks to ground the conductor in an electric heat element is usually made of - ANS Nichrome An example of resistive load is - ANS crankcase heater an example of an inductive load is - ANS motor an electric furnac...

HVAC Excellence - ELECTRICITY Exam UPDATED ACTUAL Exam Questions and CORRECT Answers Current flow is: - CORRECT ANSWER- The flow of electrons in the circuit. Impedance is: - CORRECT ANSWER- Opposition to alternating current flow. Like charges; - CORRECT ANSWER- repel each other

________ can be caused for leak detection with all high pressure refrigerants - Soap bubbles 10 lbs. of refrigerant passing through a water cooled condenser will lose 20 BTU's of heat per lb. If 10 lbs. of water passes through the condenser with an entering temperature of 80°f. The temperature of the water leaving the condenser is - 100°f A compound pressure gauge measures - Pressure and vacuum A compressor unit that has a broken reed valve will cause these symptoms - High suction pressu...