NATE Heat Pump Exam – Questions & Answers
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.
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
C: Using the heating load to size the system
D: Using the cooling load to size the system Correct Answer - D: Using
the cooling load to size the system
Auxiliary electric heat is necessary because:
A: It provides heat for the home during defrosts
B: It provides heat for the home in the event of a heat pump failure
C: It provides heat for the home if the heat pump is unable to meet the
demand for heat
D: All of the above Correct Answer - D: All of the above
Reading a voltage across the contacts of the outdoor thermostat means:
A: The thermostat contacts are closed
B: The thermostat contacts are open
C: The thermostat contacts are stuck
D: The thermostat contacts are working correctly Correct Answer - B:
The thermostat contacts are open
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.
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
C: Using the heating load to size the system
D: Using the cooling load to size the system Correct Answer - D: Using
the cooling load to size the system
Auxiliary electric heat is necessary because:
A: It provides heat for the home during defrosts
B: It provides heat for the home in the event of a heat pump failure
C: It provides heat for the home if the heat pump is unable to meet the
demand for heat
D: All of the above Correct Answer - D: All of the above
Reading a voltage across the contacts of the outdoor thermostat means:
A: The thermostat contacts are closed
B: The thermostat contacts are open
C: The thermostat contacts are stuck
D: The thermostat contacts are working correctly Correct Answer - B:
The thermostat contacts are open
