NATE Heat Pump Exam Questions and Answers 100% Correct Charging a heat pump with refrigerant is best accomplished in the _______ mode. A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode - CORRECT ANSWER -B: Cooling mode Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode - CORRECT ANSWER -A: Heating mode Which of the following components is exclusive to the heat pump? A: Condenser B: Oil separator C: Reversing valve D: Accumulator - CORRECT ANSWER -C: Reversing valve Which of the following airflow rates is the most reasonable for a heat pump system operating in the heating cycle? A: 200 cfm per ton B: 300 cfm per ton C: 400 cfm per ton D: 450 cfm per ton - CORRECT ANSWER -D: 450 cfm per ton During the heat pump's cooling cycle, the outdoor coil is utilized as a _________ while the indoor coil is utilized as a____________. A: Condenser, evaporator B: Evaporator, condenser C: Compressor, accumulator D: Accumulator, condenser - CORRECT ANSWER -A: Condenser, evaporator Heat is present in winter outdoor air until the outside air ambient temperature reaches a low temperature of: A: 0 degrees F B: 32 degrees F C: 273 degrees F D: -459 degrees F - CORRECT ANSWER -D: -459 degrees F Technically this is true, but not practical. A heat pump is doing good to continue to work below 10 deg F unless specifically designed for lower temperatures. The heat pump utilizes: A: Two filter -driers with check valves B: One bi -flow filter -drier C: A single mono -flow filter -drier in the liquid line D: Some use the bi -flow filter -drier and others use two filter -driers with check valves - CORRECT ANSWER -D: Some use the bi -flow- filter-drier and others use two filter -
driers with check valves The correct way to size a heat pump is to perform both heating and cooling load calculations and select the heat pump size by: A: Adding the heating load and cooling loads B: Subtracting the smaller load from the larger load
driers with check valves The correct way to size a heat pump is to perform both heating and cooling load calculations and select the heat pump size by: A: Adding the heating load and cooling loads B: Subtracting the smaller load from the larger load
